WO2015127880A1 - 一种基站频率资源配置方法及网络设备 - Google Patents
一种基站频率资源配置方法及网络设备 Download PDFInfo
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- WO2015127880A1 WO2015127880A1 PCT/CN2015/073154 CN2015073154W WO2015127880A1 WO 2015127880 A1 WO2015127880 A1 WO 2015127880A1 CN 2015073154 W CN2015073154 W CN 2015073154W WO 2015127880 A1 WO2015127880 A1 WO 2015127880A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
Definitions
- the present application relates to the field of communications technologies, and in particular, to a base station frequency resource configuration method and a network device.
- signals are propagated through a wireless environment, and multiple access points are deployed (for example, a base station in a cellular network, an access point (AP) in a wireless local area network (WLAN) system), if adjacent access
- AP access point
- WLAN wireless local area network
- OFDM Orthogonal Frequency Division Multiplexing
- CDMA Code Division Multiple Access
- the Long Term Evolution (LTE) system is a fourth generation (4G) wireless communication system based on OFDM technology.
- the base station allocates time-frequency resources of different subcarriers for the terminal to perform service data signal transmission, and the intra-cell user There is no interference between them, but different cells using the same frequency resources will cause inter-cell interference.
- TD-LTE Time Division Duplex Time Division Long Term Evolution
- the uplink and downlink transmission of one cell in the TD-LTE system works on the same frequency, and the interference problem is more prominent.
- the first type of inter-cell interference occurs in the same subframe in the transmission direction of the neighboring cell.
- the downlink transmission of the neighboring cell causes interference to the downlink reception of the user equipment (UE) in the local cell. It is called type 1 interference; the interference caused by the uplink transmission of the UE in the neighboring cell to the uplink reception of the base station of the local cell is called type 2 interference.
- the first type of inter-cell interference exists in both TDD and FDD systems, and is a neighbor cell interference in the general sense.
- the second type of inter-cell interference occurs on subframes in which the adjacent cells transmit in different directions.
- the uplink receiving of the base station may be interfered by the downlink transmitting signal of the neighboring cell base station, which is called type 3 interference; and the downlink receiving of the neighboring cell UE may be received.
- the interference of the uplink transmission signal of the terminal of the cell is called type 4 interference.
- the second type of inter-cell interference may only occur in the TDD system, especially when the adjacent TDD cell flexibly performs uplink and downlink resource configuration, and the second type of inter-cell interference is also called cross-slot interference of the TDD system.
- the base station and the neighboring base station perform the load indication and the high interference indication information of the neighboring cell, and the distributed coordination mode is adopted between the cells under the base station to perform interference coordination, and the coordination mode may be: if the cell 1 has high load and serious interference, the neighboring cell
- the cell 2 central user can use all the frequency band resources of the cell to reduce the edge user resource allocation or the edge user only uses part of the resources to ensure the signal transmission of the cell 1 user.
- the ICIC technical information of the LTE system is rough, and the resource coordination between the base stations is not very real.
- the current simulation and application show that the ICIC technology is not very good for inter-cell interference coordination and improving the system capacity.
- the dense cell deployment scenario has its own characteristics, including: the cell radius is small, the difference between the central user and the edge user is not obvious, and inter-cell interference has an impact on all users; the cell is densely deployed, and not all cells have direct interfaces for signaling transmission. Due to the dense cell, the number of cells involved in inter-cell interference coordination is large. The inter-cell interference problem in the dense cell deployment scenario is more prominent and serious than that in the macro network deployment scenario. However, through distributed signaling interaction, the signaling transmission demand is large, resulting in excessive interface load between cells, and due to the number of nodes involved, distribution The interference coordination algorithm and the effect will not be very good.
- the present application provides a method for configuring a base station frequency resource, which is used to implement reasonable allocation of base station frequency resources, and avoid or reduce inter-cell interference.
- a method for configuring a base station frequency resource includes:
- the frequency point priority coefficient characterizing interference of the neighboring cells adjacent to the cell location in the basic frequency resource to the cell, And/or a load of the neighboring cells within the basic frequency resource;
- the frequency priority coefficient of the resource may include the following operations:
- the sum of the first weighting factor and the second weighting factor is 1;
- the interference of the neighboring cell to the cell in the basic frequency resource is a ratio of the interference measurement value of the neighboring cell to the cell to the maximum interference value of the interference, and the neighboring cell pairs the cell
- the interference measurement value is a measured intensity value of the reference signal received power RSRP or other reference signal of the neighboring cell measured in the cell;
- the value of the load of the neighboring cell in the basic frequency resource ranges from 0 to 1, where “0” indicates that the resource of the neighboring cell has no occupied resources, and “1” indicates the neighboring cell. All resources are occupied.
- the frequency resource is allocated to the cell according to the frequency priority coefficient of the basic frequency resource, so that the allocated frequency resource and the frequency resource of each neighboring cell are used. Orthogonal. Or, according to the frequency priority coefficient of the basic frequency resource, allocate a frequency resource to the cell, such that the allocated frequency resource does not coincide with a center frequency band of the frequency resource of each neighboring cell; or And allocating a frequency resource to the cell according to the frequency priority coefficient of the basic frequency resource, so that the allocated frequency resource has minimal interference and/or a minimum load.
- the interference of the neighboring cell to the cell in the basic frequency resource is used as a single cell frequency point priority coefficient of the neighboring cell to the cell;
- allocating frequency resources to the cell according to the frequency priority coefficient of the basic frequency resource may include the following operations:
- the threshold value Th Rseg is reached, the search is stopped, and the determined allowed working frequency band is allocated to the cell, and the first frequency point priority coefficient threshold value Th Rseg is the minimum value of the interference that can be indicated.
- allocating frequency resources to the cell according to the frequency priority coefficient of the basic frequency resource may include the following operations:
- allocating a frequency resource to the cell according to the frequency priority coefficient of the basic frequency resource may include the following operations:
- the method further includes:
- the frequency resource is allocated to the cell, which may include the following operations: searching for the allowed working frequency bands of the cell that meet the optional working bandwidth one by one.
- searching for the allowed working frequency bands of the cell that meet the optional working bandwidth one by one When it is determined that the absolute available frequency band is found, the absolute available frequency band is allocated to the cell; the absolute available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset a first absolute available frequency priority coefficient threshold Th Rseg0 , and/or a frequency priority coefficient I Band of the allowed working frequency band is less than or equal to a preset second absolute available frequency priority coefficient threshold Th 0 .
- the allocating the frequency resource to the cell according to the frequency priority coefficient of the basic frequency resource may include: searching for each allowed working frequency band of the cell that meets an optional working bandwidth, and determining the found When the frequency band is available, the available frequency band is allocated to the cell; the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency point priority The level coefficient threshold value Th Rseg , and/or the frequency priority coefficient I Band of the allowed working frequency band is less than or equal to a preset second available frequency point priority coefficient threshold value Th Band .
- the method may include: traversing each allowed working frequency band of the cell that meets the optional working bandwidth, and searching for each The available frequency band is saved, and the available frequency band is allocated to the cell according to the saved central frequency point and bandwidth of the available frequency band; the available frequency band satisfies: the frequency priority coefficient I of each basic frequency resource of the allowed working frequency band Rseg is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the frequency priority coefficient I Band of the allowed working frequency band is less than or equal to a preset second available frequency priority coefficient Threshold Th Band .
- Each of the allowed working frequency bands of the cell that meets the optional working bandwidth is searched one by one. If the absolute available frequency band is not found, one processing manner is as follows:
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- Each of the allowed working frequency bands of the cell that meets the optional working bandwidth is searched one by one. If the absolute available frequency band is not found, another processing method is as follows:
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the optional working bandwidths of the cells are sorted in descending order, and the optional working bandwidth is obtained in an order of arrangement.
- Calculating a frequency resource for the cell according to the frequency priority coefficient of the basic frequency resource, on the basis of calculating a frequency priority coefficient I Band of each allowed working frequency band of the cell that meets an optional working bandwidth Can include the following operations:
- the working frequency band is allowed to be allocated to the selected operating frequency band to the cell.
- the frequency resource is allocated to the cell.
- Source including:
- the frequency priority coefficient I Band of the allowed working frequency band is:
- a frequency priority coefficient I Band mean( ⁇ *I Rseg )+P fcenter of the allowed working frequency band, where mean( ⁇ *I Rseg ) indicates a frequency band priority of each basic frequency resource included in the allowed working frequency band
- mean( ⁇ *I Rseg ) indicates a frequency band priority of each basic frequency resource included in the allowed working frequency band
- a weighted average of the order coefficients I Rseg , ⁇ represents a weight
- P fcenter is a factor for indicating a coincidence condition reflecting a center frequency point of the allowable operating band.
- P fcenter when the center frequency of the allowed working frequency band is used by the neighboring cell, P fcenter is an infinity value; when the center frequency of the allowed working frequency band is not used by the neighboring cell, P fcenter It is zero.
- the frequency priority coefficient I Band of the allowed working frequency band is:
- the frequency priority coefficient I Band mean ( ⁇ * I Rseg ) of the allowed working frequency band, wherein mean ( ⁇ * I Rseg ) represents a frequency band priority coefficient I of each basic frequency resource included in the allowed working frequency band
- the weighted average of Rseg , ⁇ represents the weight.
- the selected frequency band is allocated to the cell according to the saved center frequency and bandwidth of the available frequency band, including:
- the available frequency bands are allocated to the cells according to the saved center frequency and bandwidth of the available frequency bands, including:
- interference caused by each of the neighboring cells in the basic frequency resource including:
- the centralized node receives interference of the neighboring cell reported by the base station to the cell, and the interference is determined by the base station performing interference measurement on the neighboring cell;
- the centralized node determines interference of the neighboring cell measured by the terminal or the base station, which is saved in the history record of the cell opening, as the interference of the neighboring cell to the cell.
- each basic frequency resource in each allowed working frequency band of the cell that meets the optional working bandwidth is determined, including:
- the allowed working frequency band of the cell that meets the allowed working bandwidth is divided into multiple basic frequency resources according to the basic unit of the frequency resource.
- the method further includes:
- the centralized node receives the frequency and bandwidth capability information sent by the base station after establishing a connection with the network, and determines, according to the frequency point and the bandwidth capability information, each allowed working bandwidth of the cell opened by the base station, and each allowed work. Frequency band.
- the method before receiving the frequency and bandwidth capability information sent by the base station after establishing a connection with the network, the method further includes:
- the base station receives a request message sent by the triggering node to request to start the cell.
- the method may further include:
- the central node notifies the base station to enable the cell, and receives the frequency and bandwidth capability information sent by the base station, and determines, according to the frequency point and the bandwidth capability information, each allowed work of the cell opened by the base station. Bandwidth and each allowed operating band.
- the method may further include:
- the centralized node refuses to allocate a frequency resource to the cell, and returns a message rejecting the cell access to the base station that starts the cell.
- the method may further include:
- the base station resends a request for allocating frequency resources to the cell to the centralized node after a set time period.
- the method may further include:
- the frequency resource with a larger bandwidth is allocated to the cell as a principle
- the number of the cells in which frequency resources are allocated is the most.
- a network device including:
- a first determining module configured to determine each basic frequency resource in each allowed working frequency band of the cell that meets an optional working bandwidth
- a second determining module configured to determine a frequency priority coefficient of each of the basic frequency resources, where the frequency priority coefficient indicates that each neighboring cell adjacent to the cell location is within the basic frequency resource The interference caused by the cell, and/or the load of the neighboring cells within the basic frequency resource;
- an allocating module configured to allocate a frequency resource to the cell according to the frequency priority coefficient of the basic frequency resource.
- the second determining module is specifically configured to:
- the second determining module is specifically configured to:
- the allocation module is specifically configured to:
- the second determining module is specifically configured to:
- the interference of the neighboring cell to the cell in the basic frequency resource is used as a single cell frequency point priority coefficient of the neighboring cell to the cell;
- the allocation module is specifically configured to:
- the threshold value Th Rseg is reached, the search is stopped, and the determined allowed working frequency band is allocated to the cell, and the first frequency point priority coefficient threshold value Th Rseg is the minimum value of the interference that can be indicated.
- the second determining module is specifically configured to:
- the allocation module is specifically configured to:
- the allocation module is specifically configured to:
- the second determining module is further configured to:
- the allocation module is specifically configured to:
- the absolute available frequency band satisfies: a frequency point priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first absolute available frequency point priority coefficient threshold value Th Rseg0 , and/or The frequency priority coefficient I Band of the allowed working frequency band is less than or equal to a preset second absolute available frequency priority coefficient threshold Th 0 .
- the distribution module is further configured to:
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the distribution module is further configured to:
- each of the allowed working frequency bands of the cell that meets the optional working bandwidth is searched one by one, and when the available frequency band is found to be found, the available frequency band is allocated to the cell;
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the distribution module is further configured to:
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the distribution module is further configured to:
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the allocation module is further configured to:
- the optional working bandwidths of the cells are sorted in descending order, and the optional working bandwidth is obtained in an order of arrangement.
- the allocation module is specifically configured to:
- the working frequency band is allowed to be allocated to the selected operating frequency band to the cell.
- the allocation module is specifically configured to:
- the allocation module is specifically configured to:
- the allocation module is specifically configured to:
- the second determining module is specifically configured to:
- the first determining module is specifically configured to:
- the allowed working frequency band of the cell that meets the allowed working bandwidth is divided into multiple basic frequency resources according to the basic unit of the frequency resource.
- the first determining module is further configured to:
- the first determining module is further configured to:
- the distribution module is further configured to:
- Refusing to allocate frequency resources to the cell and returning a message rejecting the cell access to the base station that turns on the cell.
- a network device including:
- a processor a program for reading the memory, performs the following process:
- the frequency point priority coefficient characterizing interference of the neighboring cells adjacent to the cell location in the basic frequency resource to the cell, And/or a load of the neighboring cells within the basic frequency resource;
- transceiver for receiving and transmitting data under the control of a processor
- a memory that holds the data used by the processor to perform operations.
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the processor is specifically used to read the program of the memory, and performs the following process:
- the interference of the neighboring cell to the cell in the basic frequency resource is used as a single cell frequency point priority coefficient of the neighboring cell to the cell;
- the processor is specifically used to read the program of the memory, and performs the following process:
- the threshold value Th Rseg is reached, the search is stopped, and the determined allowed working frequency band is allocated to the cell, and the first frequency point priority coefficient threshold value Th Rseg is the minimum value of the interference that can be indicated.
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the processor is specifically used to read the program of the memory, and performs the following process:
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the processor is also used to read the program of the memory, and the following process is performed:
- the processor is specifically used to read the program of the memory, and performs the following process:
- the absolute available frequency band satisfies: a frequency point priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first absolute available frequency point priority coefficient threshold value Th Rseg0 , and/or The frequency priority coefficient I Band of the allowed working frequency band is less than or equal to a preset second absolute available frequency priority coefficient threshold Th 0 .
- the processor is also used to read the program of the memory, and the following process is performed:
- the absolute available frequency band is not found, traversing the allowed working frequency bands of the cell that meet the optional working bandwidth, searching for each available frequency band and saving, according to the saved central frequency point and bandwidth selection of the available frequency band
- the available frequency bands are allocated to the cell
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the processor is also used to read the program of the memory, and the following process is performed:
- each of the allowed working frequency bands of the cell that meets the optional working bandwidth is searched one by one, and when the available frequency band is found to be found, the available frequency band is allocated to the cell;
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the processor is also used to read the program of the memory, and the following process is performed:
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the processor is also used to read the program of the memory, and the following process is performed:
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the processor is further configured to read a program of the memory and perform the following process:
- the optional working bandwidths of the cells are sorted in descending order, and the optional working bandwidth is obtained in an order of arrangement.
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the working frequency band is allowed to be allocated to the selected operating frequency band to the cell.
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the processor is specifically configured to read a program of the memory, and performs the following processes:
- the allowed working frequency band of the cell that meets the allowed working bandwidth is divided into multiple basic frequency resources according to the basic unit of the frequency resource.
- the processor is also used to read the program of the memory, and the following process is performed:
- the processor is also used to read the program of the memory, and the following process is performed:
- the processor is also used to read the program of the memory, and the following process is performed:
- Refusing to allocate frequency resources to the cell and returning a message rejecting the cell access to the base station that turns on the cell.
- determining a frequency priority coefficient of each of the basic frequency resources by determining each basic frequency resource in each allowed working frequency band of the cell that meets the optional working bandwidth, according to the The frequency priority coefficient of the basic frequency resource is allocated to the cell, and the frequency resource is divided into basic frequency resources to implement unified planning of the frequency resource, and the frequency priority of each basic frequency resource is determined.
- the coefficient determines the frequency resource that can be used by the cell under the base station, thereby achieving reasonable configuration of the base station frequency resource, and effectively reducing or avoiding inter-cell interference.
- 1a is a schematic diagram of inter-cell interference in the prior art
- FIG. 1b is a schematic diagram of another inter-cell interference in the prior art
- FIG. 2 is a schematic diagram of another inter-cell interference in the prior art
- FIG. 3 is a flowchart of a method for configuring a frequency resource of a base station according to an embodiment of the present application
- FIG. 5 is a schematic diagram of a process of searching for available frequency bands according to each optional working bandwidth according to an embodiment of the present application
- FIG. 6 is a schematic diagram of a process for a base station to request allocation of frequency resources according to an embodiment of the present application
- FIG. 7 is a schematic diagram of a process of triggering allocation of frequency resources by a centralized node according to an embodiment of the present application
- FIG. 8 is a schematic diagram of a process of triggering a node to allocate a frequency resource according to an embodiment of the present application
- FIG. 9 is a schematic diagram of a process for triggering a node to allocate frequency resources to a centralized node according to an embodiment of the present application.
- FIG. 10 is a schematic diagram of an effect of allocating orthogonal frequency resources for different cells in an embodiment of the present application.
- FIG. 11 is a schematic diagram of the effect of allocating frequency resources that do not coincide with a central frequency band for different cells according to an embodiment of the present application
- FIG. 12 is a schematic diagram of a network device according to an embodiment of the present application.
- FIG. 13 is a schematic structural diagram of a network device according to an embodiment of the present application.
- the embodiment of the present application provides a method and a device for configuring a base station frequency resource.
- the centralized node divides the working frequency band of the cell into multiple basic frequency resources according to the basic unit of the frequency resource, maintains the reference parameters of each basic frequency resource, and controls according to the reference parameters of the basic frequency resources.
- the reference parameter of each basic frequency resource is a frequency point priority coefficient.
- the central node may be a high-level network node, for example, a separate gateway (GW) or a core network node, or an operation, management, and maintenance (OAM); the centralized node may also be a base station, and the base station may also be a base station.
- GW gateway
- OAM operation, management, and maintenance
- the frequency resource allocation of multiple base stations or multiple cells under the base station can be managed, which can be regarded as a super base station.
- the detailed method for configuring the frequency resource of the base station is as follows:
- Step 301 Determine each basic frequency resource in each allowed working frequency band of the cell that meets the optional working bandwidth.
- the base station after receiving the request message sent by the triggering node to enable the cell and establishing a connection with the network, the base station sends the frequency point and bandwidth capability information to the centralized node.
- the centralized node receives the frequency and bandwidth capability information sent by the base station after establishing a connection with the network, and determines, according to the frequency point and the bandwidth capability information, each allowed working bandwidth of the cell opened by the base station and each allowed working frequency band.
- the central node notifies the base station to enable the cell, and receives the frequency and bandwidth capability information sent by the base station, and determines, according to the frequency point and the bandwidth capability information, the Each allowed working bandwidth of the cell and each allowed working frequency band.
- the allowable working bandwidth refers to the frequency range implemented on a specific frequency band. It is assumed that the optional working bandwidth of the cell is 20 MHz, and the working bandwidth is allowed to be 20 MHz in the 3.4 GHz-3.6 GHz band.
- the allowed working frequency band is the intersection of the working frequency band supported by the base station to which the cell belongs (ie, the factory-set working frequency band) and the operating frequency band allocated by the operator for the base station.
- the allowed working frequency band of the cell to be allocated the frequency resource that meets the allowed working bandwidth is according to the frequency resource corresponding to the allowed working bandwidth.
- the basic unit is divided into a plurality of basic frequency resources, and the basic frequency resource is a frequency resource of a basic unit size of the frequency resource.
- the basic unit of the frequency resource refers to a basic frequency resource that can form a working frequency band of the cell, and is based on a Long Term Evolution (LTE) system, including Long Term Evolution (LTE), Advanced Long Term Evolution (LTE-Advanced), meeting hotspots, and indoor coverage.
- LTE Long Term Evolution
- LTE-Hi Long Term Evolution
- the cell bandwidth is 1.4 megahertz (MHz), 3 MHz, 5 MHz, 10 MHz, 20 MHz, and there may be more bandwidth in the future.
- the operating bandwidth of the cell is 1.4 megahertz (MHz)
- the basic unit of frequency resource (Rseg) is 1.4 megahertz
- 1.4 MHz is the transmission system message and the primary channel synchronization signal (PSS)/synchronization signal.
- PSS primary channel synchronization signal
- base station bandwidth is allocated as one basic unit of frequency resources.
- the working bandwidth of the cell is 3 megahertz
- Rseg is 1.25 megahertz or 1.5 megahertz
- Rseg at 1.25 MHz is convenient to form a larger bandwidth
- Rseg at 1.5 MHz can stagger the center frequency of different cells. Ensure that system messages and common channels do not interfere with each other.
- the center frequency of the base station bandwidth allocation is the intersection of two Rsegs; if Rseg is 1.5 megahertz, the base station bandwidth is allocated as an integer multiple of Rseg.
- the Rseg is 1.25 megahertz or 1.5 megahertz or 5 megahertz.
- Rseg uses 1.25Mhz or 2.5MHz to shift the center frequency of different cells to ensure that system messages and common channels do not interfere with each other.
- the base station bandwidth allocation is an integer multiple of Rseg, specifically: the base station bandwidth is equal to Rseg or 2N ⁇ Rseg, where N is a positive integer greater than or equal to 1, wherein the case where the base station bandwidth is equal to Rseg is only applicable to Rseg being 5 MHz and the base station bandwidth is also 5MHz scene.
- the base station 1 frequency resource allocation is Rseg1+Rseg2, that is, the working frequency band of the base station 1 is 3400-3405 MHz;
- the base station 2 frequency resource allocation is Rseg2+Rseg3, that is, the working frequency band of the base station 2 is 3402.5-3407.5 MHz.
- Step 302 Determine a frequency priority coefficient of each of the basic frequency resources, where the frequency priority coefficient is characterized by interference caused by neighboring cells adjacent to the cell location of the frequency resource to be allocated in the basic frequency resource. And/or the load of each neighboring cell within the basic frequency resource.
- the central node and the base station respectively maintain a frequency priority table of each basic frequency resource, where each basic frequency resource in the frequency priority table has a corresponding frequency priority coefficient, and a frequency priority coefficient of the basic frequency resource
- the size is used to indicate whether the frequency resource of the segment can be allocated to the base station for use, so that the base station achieves better transmission performance.
- the greater the value of the frequency priority coefficient of the basic frequency resource in the frequency priority table the lower the priority of the frequency resource that can be used, and the value of the frequency priority coefficient is zero. Indicates that the available priority of the segment frequency resource is the highest.
- the frequency point priority table may be based on cell cluster maintenance, that is, each cell cluster including multiple neighboring cells maintains an independent frequency point priority table; or may be based on cell maintenance, that is, each cell maintains one neighbor The frequency priority table affected by cell interference.
- the frequency priority table based on cell cluster maintenance is shown in Table 1.
- the frequency priority table is maintained in both the centralized node and the base station.
- the frequency priority table only considers the frequency priority coefficient of the basic frequency resource corresponding to each Rseg in the allowed working frequency band of the cell, and the NaN indicates that the allowed working frequency range of the cell has been exceeded.
- Cell1 to celln are the identifiers of cell 1 to cell n, respectively, and I Rsegi represents the frequency priority coefficient of the basic frequency resource corresponding to Rseg of i, and the value range of i is [0, N].
- Table 1 Frequency priority table based on cell cluster maintenance
- the frequency priority table based on cell maintenance is shown in Table 2.
- the frequency priority table is maintained in both the centralized node and the base station.
- the frequency priority table only considers the Rseg frequency priority coefficient in the allowed working frequency band of the cell, where I RsegBi represents the frequency priority coefficient of the basic frequency resource corresponding to the Rseg numbered Bi in the allowed frequency band of the cell.
- Table 2 Frequency priority table based on cell maintenance
- determining, by each of the neighboring cells, the caused by the neighboring cell in the basic frequency resource And/or a load of the neighboring cell within the basic frequency resource; according to interference caused by the neighboring cell to the cell within the basic frequency resource, and/or the neighboring cell is Calculating a single-cell frequency priority coefficient of each of the neighboring cells to the cell, and calculating a single-cell frequency priority of the neighboring cell according to the load in the basic frequency resource a coefficient, the frequency priority coefficient of the basic frequency resource is calculated.
- the single-cell frequency priority coefficient is characterized by interference caused by a single neighboring cell to the cell within the basic frequency resource, and/or a load of a single neighboring cell within the basic frequency resource.
- a product of a first weighting factor a 1 and a load of the neighboring cell in the basic frequency resource is calculated, and the second weighting factor a 2 is adjacent to the neighboring cell a sum of products of interferences to the cell in the basic frequency resource, obtaining a single cell frequency point priority coefficient for each cell of the neighboring cell;
- the product of the single-cell frequency priority coefficient of each neighboring cell and the weighting coefficient of the neighboring cell are respectively calculated, and the frequency priority coefficient I Rseg of the basic frequency resource is obtained .
- the single cell frequency priority coefficient of the cell cell1 of the adjacent cell celln to which the frequency resource is to be allocated is expressed as:
- i celln-cell1 a 1 *celln cell load + a 2 *celln cell interference to cell 1 (Equation 1).
- a cell for each fundamental frequency resource occupied CellN substantially take the same value may be calculated in each frequency band resources of i celln-cell1 or substantially frequency resources in each frequency band i celln-cell1, respectively, depending CellN
- the cell load in the basic frequency resource and/or the cell's interference to the cell within the basic frequency resource is a narrowband measurement calculated for different frequency resources, or a broadband measurement over all cell bandwidths.
- the cell cell1 frequency priority coefficient can be expressed as:
- ⁇ n represents the weight coefficient corresponding to the cell celln.
- the weight coefficient corresponding to the neighboring cell may be fixed to 1.
- the single cell frequency priority coefficient if it is necessary to normalize the single cell frequency priority coefficient, it may further be defined:
- the sum of the first weighting factor and the second weighting factor is 1;
- the interference of the neighboring cell to the cell in the basic frequency resource is the ratio of the interference measurement value of the neighboring cell to the cell to the interference maximum quantization value, and the interference measurement value of the neighboring cell to the cell a measured intensity value of a reference signal received power (RSRP) or other reference signal of the neighboring cell measured within the cell;
- RSRP reference signal received power
- the value of the load of the neighboring cell ranges from 0 to 1, where "0" indicates that the resource of the neighboring cell is not occupied, and "1" indicates that all resources of the neighboring cell are occupied.
- the neighboring cell interferes with the cell in a basic frequency resource, as a single cell frequency point priority coefficient of the neighboring cell to the cell;
- determining interference caused by a cell in which a neighboring cell allocates a frequency resource in a basic frequency resource may be as follows:
- the centralized node receives interference of the neighboring cell reported by the base station to the cell, and the interference is determined by the base station performing interference measurement on the neighboring cell;
- the centralized node determines interference of the neighboring cell measured by the terminal or the base station, which is saved in the history record of the cell opening, as the interference of the neighboring cell to the cell.
- the frequency priority coefficient of each basic frequency resource after determining the frequency priority coefficient of each basic frequency resource, calculating, according to the frequency priority coefficient I Rseg of each basic frequency resource, calculating a cell that meets an optional working bandwidth.
- the frequency priority coefficient I Band of the working frequency band is allowed.
- the frequency priority coefficient of the allowed working frequency band is characterized by interference of the neighboring cells adjacent to the cell location in the allowed working frequency band, and/or the neighboring cells are within the allowed working frequency band. load.
- the frequency priority coefficient I Band of each allowed working frequency band has the following two calculation manners, specifically:
- the first calculation method requires that the center frequency of the working frequency band allocated to the cell does not coincide with the center frequency of the working frequency band of other cells, specifically:
- a frequency priority coefficient I Band mean( ⁇ *I Rseg )+P fcenter of the allowed working frequency band, where mean( ⁇ *I Rseg ) indicates a frequency band priority of each basic frequency resource included in the allowed working frequency band
- mean( ⁇ *I Rseg ) indicates a frequency band priority of each basic frequency resource included in the allowed working frequency band
- a weighted average of the order coefficients I Rseg , ⁇ represents a weight
- P fcenter is a factor for indicating a coincidence condition reflecting a center frequency point of the allowable operating band.
- P fcenter is an infinity value
- P fcenter is a value of zero.
- the second calculation method does not consider the coincidence of the center frequency of the working frequency band allocated to the cell with the center frequency of other cells, specifically:
- the frequency priority coefficient I Band mean ( ⁇ * I Rseg ) of the working frequency band is allowed, wherein mean ( ⁇ * I Rseg ) represents the frequency band priority coefficient I Rseg of each basic frequency resource included in the allowed working frequency band Weighted average, ⁇ represents the weight.
- Step 303 Allocate frequency resources to the cell according to the frequency priority coefficient of the basic frequency resource.
- the frequency resource is allocated to the cell according to the frequency priority coefficient of the basic frequency resource, and the allocated frequency resource is orthogonal to the frequency resource of each neighboring cell;
- the frequency resource is allocated to the cell with a larger bandwidth as the principle; or the number of cells allocated with the frequency resource is the maximum.
- the frequency resource allocated to the cell may have the following specific implementation manners:
- the absolute available frequency band in each allowed working frequency band that meets the optional working bandwidth is first searched, and if the absolute available frequency band is directly allocated to the cell, if not, the available frequency band is further searched.
- the absolute available frequency band satisfies: a frequency point priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first absolute available frequency point priority coefficient threshold value Th Rseg0 , and/or The frequency priority coefficient I Band of the allowed working frequency band is less than or equal to a preset second absolute available frequency priority coefficient threshold Th 0 .
- the available frequency band satisfies: a frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the second type is used to search for the allowed working frequency bands of the cell that meet the optional working bandwidth, and determine to find the available frequency band, and allocate the available frequency band to the cell;
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the available frequency bands in the allowed working frequency bands that meet the optional working bandwidth are searched, and the frequency resources are allocated to the cells based on the found available frequency bands, and the following two implementation manners are specifically implemented:
- the first type is to find the allowed working frequency bands of the cell that meet the optional working bandwidth, and determine to find the available frequency band, and allocate the available frequency band to the cell;
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the frequency priority coefficient I may be determined according to the available frequency band.
- Band selects the available frequency band, specifically:
- the available frequency band is selected according to the frequency priority coefficient I Band of the available frequency band, specifically:
- the frequency resource is allocated to the cell according to the frequency priority coefficient I Band of each allowed working frequency band, which is specifically:
- the working frequency band is allowed to be allocated to the selected operating frequency band to the cell.
- the frequency priority coefficient I Band of each allowed working frequency band is used in step 302.
- the first calculation method is provided. If the frequency resource with the smallest interference and/or the minimum load is allocated to the cell, the frequency priority coefficient I Band of each allowed working frequency band adopts the second calculation mode provided in step 302.
- the frequency resource is allocated to the cell according to the frequency priority coefficient of the basic frequency resource.
- the specific process is:
- the threshold value Th Rseg is reached, the search is stopped, and the determined allowed working frequency band is allocated to the cell, and the first frequency point priority coefficient threshold value Th Rseg is the minimum value of the interference that can be indicated.
- the frequency resource is allocated to the cell according to the frequency priority coefficient of the basic frequency resource, and the specific process is:
- the frequency resource allocated to the cell is orthogonal to the frequency resource of each neighboring cell, that is, the frequency resource of the neighboring cell does not overlap.
- the optional working bandwidths of the cells are sorted in descending order, and the optional work is obtained according to the sorting order. bandwidth.
- the optional working bandwidths of the cells are sorted in descending order, and the optional work is obtained according to the sorting order. bandwidth.
- After obtaining an optional working bandwidth to search or traverse the allowed working frequency bands that meet the optional working bandwidth if it is necessary to continue to search for the absolute available frequency band or the available frequency band, continue to obtain the next optional working bandwidth search or traversal according to the arrangement order.
- Each allowed operating band of the optional operating bandwidth As shown in FIG. 5, the process of searching for available frequency bands one by one according to the arrangement order of each optional working bandwidth is shown.
- the centralized node when the centralized node does not find the frequency resource that can be allocated to the cell of the current frequency resource to be allocated, it refuses to allocate the frequency resource to the cell, and returns a message rejecting the cell access to the base station that starts the cell. .
- the base station sets a timer, and after receiving the set duration, resends a request for allocating frequency resources for the cell to the central node.
- the base station frequency resource configuration method provided by the embodiment of the present application is described in detail below through seven specific embodiments.
- the first specific embodiment as shown in FIG. 6, the specific process of requesting the base station to allocate frequency resources for the newly opened cell is as follows:
- a request is sent to the centralized node, and the centralized node allocates frequency resources for the newly opened cell.
- Step 601 The base station establishes a connection with the network, and reports the frequency point and bandwidth capability information to the centralized node.
- Step 602 Optionally, if the centralized node can determine the basic information of the neighboring cell of the newly opened cell, notify the base station of the basic information of the neighboring cell, and the basic information of the neighboring cell is mainly the frequency point information of the neighboring cell. .
- Step 603 The central node determines and maintains a parameter (frequency priority coefficient) in the frequency priority table, based on the cell cluster where the base station is located or the cell maintenance frequency priority table based on the cell opened by the base station, where the frequency priority is determined.
- a parameter frequency priority coefficient
- the central node determines, according to the location information or other information of the base station, the neighboring cell of the newly opened cell that needs to allocate the frequency resource, and determines the neighboring cell to the newly opened cell according to the location relationship of the neighboring cell and the frequency resource. Interference, combined with the load of the neighboring cell in each basic frequency resource, determining the frequency priority coefficient of the newly opened cell on each basic frequency resource according to Equation 1 and Equation 2;
- the base station performs neighbor cell interference measurement, such as measuring neighboring cell RSRP, path loss, etc., determining the interference situation of the neighboring cell to the newly opened cell, and reporting it to the centralized node, and the centralized node is combined with the neighboring cell in each
- the load in the basic frequency resource determines the frequency priority coefficient of the newly opened cell on each basic frequency resource according to Equation 1 and Equation 2;
- the third type, the central node is based on the interference of the neighboring cell measured by the terminal in the cell saved in the previously opened history record of the newly opened cell, or the neighboring cell measured by the base station and saved in the history record.
- the interference as the interference of the neighboring cell to the newly opened cell, combined with the load of the neighboring cell in each basic frequency resource, determines the frequency priority coefficient of the newly opened cell on each basic frequency resource according to Equation 1 and Equation 2.
- Step 604 The central node searches for the available frequency band to allocate to the newly opened cell according to the frequency priority coefficient in the frequency priority table, and configures the frequency and bandwidth for the newly opened cell, and notifies the base station of the newly opened cell.
- Reference information such as frequency priority table and neighbor cell information.
- the replying base station rejects the newly opened cell access message.
- the base station may set a timer to re-initiate the access request after a certain time interval.
- the specific process of triggering a base station to start a new cell and configuring a frequency resource for the newly opened cell in order to meet the requirements of the service data in the area is as follows:
- Step 701 The central node notifies the base station to start a new cell.
- the centralized node informs the neighboring cell of the newly opened cell of the base station, mainly frequency information.
- Step 702 The base station reports the frequency point and the bandwidth capability information to the centralized node, and optionally reports the measurement information.
- Step 703 The central node determines and maintains a parameter (frequency priority coefficient) in the frequency priority table, and determines a frequency priority based on the cell cluster where the base station is located or based on the cell maintenance frequency priority table that the base station has opened.
- the methods for the priority coefficients of each frequency point in the table are as follows:
- the central node determines, according to the location information of the base station or other information, the neighboring cell of the newly opened cell that needs to allocate the frequency resource, according to the positional relationship between the neighboring cell and the newly opened cell, and the frequency resource of the neighboring cell. Determining the interference of the neighboring cell to the newly opened cell, and combining the load of the neighboring cell in each basic frequency resource, determining the frequency priority coefficient of the newly opened cell on each basic frequency resource according to Equation 1 and Equation 2. In this method, if the central node has learned the frequency and bandwidth capability information of the newly opened cell, step 701 and step 702 may be omitted;
- the base station performs interference measurement of the neighboring cell, such as measuring the RSRP and the path loss of the neighboring cell, determining the interference of the neighboring cell to the newly opened cell, and reporting the situation to the centralized node;
- the load within each basic frequency resource determines the frequency priority coefficient of the newly opened cell on each basic frequency resource according to Equation 1 and Equation 2;
- the third type the central node, according to the previously opened history record of the newly opened cell, the interference of the neighboring cell measured by the terminal under the cell to the newly opened cell, or the base station measurement saved in the history record Adjacent
- the interference of the cell to the newly opened cell, as the interference of the neighboring cell to the newly opened cell, combined with the load of the neighboring cell in each basic frequency resource, according to formula 1 and formula 2, the newly opened cell on each basic frequency resource is determined according to formula 1 and formula 2.
- Frequency priority factor In this method, if the central node has learned the frequency and bandwidth capability information of the newly opened cell, step 701 and step 702 may be omitted.
- Step 704 The central node searches for the available frequency band to allocate to the newly opened cell according to the frequency priority coefficient in the frequency priority table, and configures the frequency and bandwidth for the newly opened cell, and notifies the base station of the newly opened cell.
- Reference information such as frequency priority table and neighbor cell information.
- the replying base station rejects the newly opened cell access message.
- the base station may set a timer to re-initiate the access request after a certain time interval.
- the opening of the new cell may be triggered by other network nodes, for example, the macro cell may trigger the opening of the covered small cell.
- the other network node may notify the base station to start a new cell, and notify the central node to open the new cell to configure the frequency resource for the newly opened cell; or, the other network node notifies the centralized node to open the new cell and is the newly opened cell. Configure frequency resources.
- trigger nodes other network nodes that trigger the initiation of a new cell are referred to as trigger nodes.
- the specific process of triggering a node to trigger a new cell for a base station is as follows:
- Step 801 The triggering node sends a request message for requesting to start a new cell to the base station.
- the request message may include only a 1-bit (bit) open request, and may also include other information, such as cell location information, coverage information, Data volume information or bandwidth demand information, etc.;
- Step 802 The base station establishes a connection with the network, and reports the frequency point and bandwidth capability information to the centralized node.
- Step 803 Optionally, if the centralized node can determine basic information of a neighboring cell of the newly opened cell, notify basic information of the neighboring cell of the base station, where the basic information is mainly frequency point information;
- Step 804 The method for determining, by the centralized node, the frequency priority coefficient in the frequency priority table based on the cell cluster in which the base station is located or based on the cell that has been opened by the base station, and determining the frequency priority coefficient is in the first embodiment.
- the method for determining the frequency priority coefficient is the same and will not be described here.
- Step 805 The central node searches for the available frequency band to allocate to the newly opened cell according to the frequency priority coefficient of the frequency point priority table, configures the frequency point and bandwidth for the newly opened cell, and notifies the base station of the newly opened cell.
- Reference information such as frequency priority table and neighbor cell information.
- the replying base station rejects the newly opened cell access message.
- Step 806 the base station sends a notification that the newly opened cell is successfully opened according to the notification that the centralized node returns a frequency resource for the newly opened cell, or the base station rejects the newly opened according to the returned by the centralized node.
- the cell access message feeds back to the triggering node a message rejecting the newly opened cell access.
- the triggering node or the base station can set a timer for a certain period of time. Re-initiate the access request after the interval.
- the specific process of the triggering node for starting a new cell triggered by the centralized node is as follows:
- Step 901 The triggering node sends a request message for starting a new cell to the central node.
- the request message may include only a 1-bit open request, and may also include other information, such as cell location information, coverage information, data volume information, or bandwidth requirement information.
- step 902 to step 904 is the same as the process of step 701 to step 703 in the second embodiment, and details are not described herein again.
- Step 905 The central node searches for the available frequency band to allocate to the newly opened cell according to the frequency priority coefficient in the frequency priority table, and configures the frequency and bandwidth for the newly opened cell, and notifies the base station of the newly opened cell.
- Reference information such as frequency priority table and neighbor cell information.
- the replying base station rejects the newly opened cell access message.
- Step 906 Optionally, the centralized node feeds back to the triggering node a message that the cell is successfully opened, or the centralized node feeds back to the triggering node a message rejecting the newly opened cell access.
- the triggering node may set a timer to re-initiate the access request after a certain time interval.
- the central node allocates completely orthogonal frequency resources for different cells, that is, the frequency resources used in the cell cluster or the neighboring cell are completely different from the frequency resources allocated to the newly accessed cell, that is, there is no frequency handover.
- the stacking effect is as shown in Fig. 10.
- the specific implementation process is as follows:
- the newly accessed cell ie, the cell to which the frequency resource is to be allocated or the newly opened cell in each of the foregoing specific embodiments
- cell1 the cell to which the frequency resource is to be allocated or the newly opened cell in each of the foregoing specific embodiments
- Step 1 The central node calculates a single-cell frequency priority coefficient in the basic frequency resource according to the interference of the neighboring cell of the newly accessed cell, specifically: the neighboring cell is on the basic frequency resource to the newly accessed cell. Interference, as the single cell frequency point priority coefficient of the neighboring cell to the newly accessed cell, is expressed by the following formula:
- i celln-cell1 celln cell interference to cell1 (Equation 3)
- the frequency priority coefficient I Rseg of cell1 in each basic frequency resource is the sum of the single cell frequency priority coefficients of each neighboring cell, which is expressed by the following formula:
- Step 2 The centralized node sorts the allowed working bandwidths of the newly accessed cells according to the largest to the smallest, and is represented as Band0 ⁇ Bandk;
- Step 3 Starting from the maximum allowable working bandwidth Band0 for the current allowed working bandwidth, the centralized node searches for all the ones from the starting point of the central frequency point of the newly allowed serving cell that matches the current allowed working bandwidth. For the possible center frequency, find the available frequency band. Once the available frequency band is found, stop searching and determine the available frequency band as the frequency band allocated to cell1.
- the available frequency band satisfies: at a certain central frequency point, the frequency priority coefficient I Rseg of all the basic frequency resources occupied by the current allowed working bandwidth satisfies I Rseg ⁇ Th Rseg , where Th Rseg is the preset first available Frequency priority coefficient threshold. Th Rseg is set to the minimum value of the interference that can be indicated.
- Step 4 If the current allowed working bandwidth Band0 has no available frequency band, the next allowed working bandwidth Band1 is replaced by the current working bandwidth, and the search process of step 3 is repeated to find the available frequency band until the available frequency band is found. Or, until the minimum allowable working bandwidth Bandk is taken as the current allowable working bandwidth, the search is stopped according to the search process of the third step of the search process and it is determined that there is no available frequency band.
- Step 5 If the available frequency band is found, the centralized node allocates the available frequency band, including the center frequency point and the bandwidth resource, to the newly accessed cell cell1.
- Step 1 The central node calculates a frequency priority coefficient I Rseg of the cell 1 in each basic frequency resource, specifically: if the basic frequency resource is not used by the neighboring cell, the frequency priority coefficient of the basic frequency resource is zero; The basic frequency resource is used by the neighboring cell, and the frequency priority coefficient of the basic frequency resource is 1;
- Step 2 The centralized node sorts the allowed working bandwidths of the newly accessed cells according to the largest to the smallest, that is, Band0 to Bandk;
- Step 3 Starting from the maximum allowable working bandwidth Band0 as the current allowed working bandwidth, the centralized node starts from the starting point of the central frequency point of the allowed working frequency band of the current allowed working bandwidth, and searches for all possible central frequency points one by one to find available Frequency band. Once the available frequency band is found, the search is stopped and the available frequency band is determined as the frequency band allocated to cell1.
- Step 4 If the current allowed working bandwidth Band0 has no available frequency band, the next allowed working bandwidth Band1 is replaced by the current allowed working bandwidth Band1, and the search process of step 3 is repeated to find the available frequency band until the available frequency band is found. Find, or until the minimum allowable working bandwidth Bandk is taken as the current allowed working bandwidth, stop searching according to the search process of step 3 and end when it is determined that there is no available frequency band.
- step 5 the central node allocates the available frequency band, including the central frequency point and the bandwidth resource, to the new access cell cell1.
- the central node may search for all available frequency bands of the newly accessed cell for each newly accessed cell; according to all newly accessed cells.
- the available frequency bands are uniformly allocated frequency resources for each newly accessed cell.
- the available frequency points corresponding to the allowed working bandwidths may be searched one by one according to the order of the allowed working bandwidths; or the available frequency points corresponding to the allowed working bandwidths may be searched in any order.
- Band1 and Band2 there are two available frequency bands for the newly accessed cell AP1: Band1 and Band2, and the available frequency band of the newly accessed cell AP2 is Band2, and the number of newly accessed cells allocated with frequency resources is maximized as a principle. Assign Band1 to AP1 and Band2 to AP2.
- the centralized node allocates frequency resources that do not overlap in the center frequency band for different cells, and the purpose thereof is to ensure that signals in the frequency bands near the center frequency of the cell do not interfere with each other (for example, 1.4 MHz near the center frequency of the LTE system) Bandwidth), that is, the broadcast message and the common signal do not interfere with each other, and the distribution effect is as shown in FIG.
- the specific process is as follows:
- Step 1 The centralized node calculates a frequency priority coefficient of each basic frequency resource according to the above formula 1 and formula 2;
- Step 2 The centralized node sorts the allowed working bandwidths of the newly accessed cells according to the largest to the smallest, that is, Band0 to Bandk;
- Step 3 Starting from the maximum allowable working bandwidth Band0 as the current allowed working bandwidth, the centralized node starts from the starting point of the central frequency point of the allowed working frequency band of the current allowed working bandwidth of the cell, and searches for all possible center frequency points one by one to find the absolute Available frequency bands.
- the absolute available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the working frequency band is allowed to be less than or equal to a preset first absolute available frequency priority coefficient threshold Th Rseg0 , and/or the allowed operation
- the frequency priority coefficient I Band of the frequency band is less than or equal to the preset second absolute available frequency priority coefficient threshold Th 0 .
- the search is stopped and the absolute available frequency band is determined as the frequency band allocated to cell1.
- Step 4 If the current allowed working bandwidth Band0 has no absolute available frequency band, the next allowed working bandwidth Band1 is replaced by the current allowed working bandwidth Band0, and the search process of step 3 is repeated to find the absolutely available frequency band until it is absolutely available. The search is stopped in the frequency band, or until the minimum allowable working bandwidth Bandk is taken as the current allowable working bandwidth, and the search is stopped according to the search process of the third step and the determination is made that there is no absolutely available frequency band.
- Step 5 If the absolute available frequency band is not found, for each allowed working bandwidth, traverse the allowed working frequency bands of the cell that meet the optional working bandwidth, find each available frequency band and save until the allowed working bandwidth is traversed. Among them, the available frequency band is saved, including the center frequency, the bandwidth, each I Rseg and each I Band of the available frequency band.
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource in the working frequency band is allowed to be less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the allowed working frequency band
- the frequency priority coefficient I Band is less than or equal to a preset second available frequency priority coefficient threshold Th Band .
- P fcenter is an infinite value when the center frequency of the allowed operating band is used by neighboring cells
- P fcenter is zero when the center frequency of the allowed operating band is not used by neighboring cells.
- Th Rseg can be set to infinity.
- the frequency band is allocated to the newly accessed cell, and after traversing all the allowed working bandwidths and the absolute available frequency band is not found, the search for the available frequency bands is no longer performed.
- Step 6 According to the saved bandwidth of each available frequency band and the frequency priority coefficient I Band of the available frequency band, select the available frequency band with the smallest I Band under the same bandwidth condition, and select if the I Band wants to be close. For the large bandwidth available frequency band, select the available frequency band.
- step 7 the available frequency bands, including the frequency points and bandwidth resources, are allocated to the newly accessed cell.
- the central node may search for all available frequency bands of the newly accessed cell for each newly accessed cell; according to all newly accessed cells.
- the available frequency bands are uniformly allocated frequency resources for each newly accessed cell.
- the principle is to allocate a larger bandwidth to the newly accessed cell, or to maximize the number of newly accessed cells that can allocate frequency resources.
- the centralized node if the maximum bandwidth is allocated to the AP as much as possible, the centralized node will assign (band1+band2) to AP1, and AP2 will recalculate the frequency priority coefficient according to the AP1 access situation.
- the frequency resource is used for the work; if the number of newly accessed cells is maximized, the centralized node allocates band1 to AP1 and band2 to AP2.
- the central node allocates frequency resources with minimum interference and/or minimum load for different cells, and the specific In the embodiment, the frequency of the central frequency band is not considered, and the frequency resource is allocated to the newly accessed cell according to the principle of minimum interference within the bandwidth.
- the neighboring cell has used the band resource (Rseg1+Rseg2) and the band resource (Rseg2+Rseg3), according to the principle of minimum interference and/or minimum load, regardless of whether the center frequency band overlaps or not, allocates frequency band resources for the newly accessed cell. (Rseg1+Rseg2).
- Step 1 The central node calculates a single-cell frequency priority coefficient of the neighboring cell celln in the basic frequency resource according to the formula 1 to calculate the frequency priority coefficient in the basic frequency resource according to Equation 2.
- Step 2 The centralized node sorts the allowed working bandwidths of the newly accessed cells according to the largest to the smallest, and is represented as Band0 ⁇ Bandk;
- Step 3 Starting from the maximum allowable working bandwidth Band0 as the current allowed working bandwidth, the centralized node starts from the starting point of the central frequency point of the allowed working frequency band of the current allowed working bandwidth of the cell, and searches for all possible center frequency points one by one to find the absolute Available frequency bands.
- the absolute available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the working frequency band is allowed to be less than or equal to a preset first absolute available frequency priority coefficient threshold Th Rseg0 , and/or the allowed operation
- the frequency priority coefficient I Band of the frequency band is less than or equal to the preset second absolute available frequency priority coefficient threshold Th 0 .
- the search is stopped and the absolute available frequency band is determined as the frequency band allocated to cell1.
- Step 4 If the current allowed working bandwidth Band0 has no absolute available frequency band, the next allowed working bandwidth Band1 is replaced by the current allowed working bandwidth Band0, and the search process of step 3 is repeated to find the absolutely available frequency band until it is absolutely available. The search is stopped in the frequency band, or until the minimum allowable working bandwidth Bandk is taken as the current allowable working bandwidth, and the search is stopped according to the search process of the third step and the determination is made that there is no absolutely available frequency band.
- Step 5 If the absolute available frequency band is not found, for each allowed working bandwidth, traverse the allowed working frequency bands of the cell that meet the optional working bandwidth, find each available frequency band and save until the allowed working bandwidth is traversed. Among them, the available frequency band is saved, including the center frequency, the bandwidth, each I Rseg and each I Band of the available frequency band.
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource in the working frequency band is allowed to be less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the allowed working frequency band
- the frequency priority coefficient I Band is less than or equal to a preset second available frequency priority coefficient threshold Th Band .
- Th Rseg can be set to infinity.
- I Band is a comprehensive weighted value of the frequency priority coefficient of all basic frequency resources in the bandwidth.
- the weighted average of the frequency priority coefficients of all basic frequency resources in the bandwidth of the I Band is used.
- the frequency band is allocated to the newly accessed cell, and after traversing all the allowed working bandwidths and the absolute available frequency band is not found, the search for the available frequency bands is no longer performed.
- Step 6 According to the saved bandwidth of each available frequency band and the frequency priority coefficient I Band of the available frequency band, select the available frequency band with the smallest I Band under the same bandwidth condition, and select if the I Band wants to be close. For the large bandwidth available frequency band, select the available frequency band.
- step 7 the available frequency bands, including the frequency points and bandwidth resources, are allocated to the newly accessed cell.
- the available frequency band is determined by setting a threshold value.
- the available frequency band is determined by setting a threshold value, and the basic idea is to use the frequency in the allowed working frequency band of the base station.
- the point priority coefficients are sorted to select the available frequency bands allocated to the newly accessed cell.
- the centralized node allocates available frequency resources that do not coincide with the central frequency band for different cells;
- the centralized node does not consider the influence of the central frequency band, and allocates frequency resources with minimum interference and/or minimum load for different cells.
- Step 1 The centralized node calculates a single-cell frequency priority coefficient in the basic unit of the resource according to Formula 1, and calculates a frequency priority coefficient in the basic unit of the resource according to Formula 2.
- Step 2 For each allowed working bandwidth, the centralized node starts from the starting point of the center frequency of the allowed working frequency band of the cell that meets the allowed working bandwidth, traverses all possible center frequency points, and calculates the frequency priority coefficient I of the allowed working frequency band.
- Band and I Band are the comprehensive weighted values of the frequency unit priority coefficients of all resources in the bandwidth.
- the allowed working bandwidths of the newly accessed cells are ranked from largest to smallest, and are represented as Band0 to Bandk, and the maximum allowed working bandwidth is Band0. Start by traversing each allowable working bandwidth in turn to calculate each I Band .
- the centralized node stores information about all allowed working frequency bands from Band0 to BandK, including: center frequency, bandwidth, I Rseg , and I Band .
- Step 3 The centralized node sorts the I Bands that allow the working bandwidth, and uniformly considers the bandwidth and frequency priority information.
- the bandwidth is the same, the frequency band with the smallest I Band is preferentially selected, and the difference between the I Bands is set.
- the band with the largest bandwidth is preferentially selected as the available band.
- a specific calculation method is:
- Step 4 The centralized node allocates the available frequency bands, including the center frequency and bandwidth resources, to the newly accessed cell cell1.
- the specific process of the second processing mode is the same as the specific processing process of the first processing mode.
- the only difference is that when the frequency priority coefficient I Band of each allowed working frequency band is calculated in the third step, the coincidence of the central frequency point is not considered.
- the embodiment of the present application further provides a network device.
- the network device may be a gateway.
- a high-level network node such as a (GW) or core network node or Operation, Maintenance, and Maintenance (OAM) may also be a super base station.
- the network device mainly includes:
- the first determining module 1201 is configured to determine each basic frequency resource in each allowed working frequency band of the cell that meets the optional working bandwidth;
- a second determining module 1202 configured to determine a frequency point priority coefficient of each of the basic frequency resources, where the frequency priority coefficient indicates that each neighboring cell adjacent to the cell location is in the basic frequency resource The interference caused to the cell, and/or the load of the neighboring cells within the basic frequency resource;
- the allocating module 1203 is configured to allocate, according to the frequency priority coefficient of the basic frequency resource, the cell Frequency resource.
- the second determining module is specifically configured to:
- the second determining module is specifically configured to:
- the second determining module is specifically configured to:
- the interference of the neighboring cell to the cell in the basic frequency resource is used as a single cell frequency point priority coefficient of the neighboring cell to the cell;
- the second determining module is specifically configured to:
- the second determining module is specifically configured to:
- the second determining module is further configured to:
- the frequency of the fundamental frequency resource priority factor I Rseg calculates the cell meet the allowed operating band frequency selectable operating bandwidth priority factor I Band.
- the allocation module is specifically configured to:
- the allocation module is specifically used to:
- the allocation module allocates frequency resources for the cell, and may have the following specific implementation manners:
- the allocation module is specifically configured to:
- the absolute available frequency band satisfies: a frequency point priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first absolute available frequency point priority coefficient threshold value Th Rseg0 , and/or The frequency priority coefficient I Band of the allowed working frequency band is less than or equal to a preset second absolute available frequency priority coefficient threshold Th 0 .
- the allocation module is further configured to:
- the absolute available frequency band is not found, traversing the allowed working frequency bands of the cell that meet the optional working bandwidth, searching for each available frequency band and saving, according to the saved central frequency point and bandwidth selection of the available frequency band
- the available frequency bands are allocated to the cell
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the allocation module is further configured to:
- each of the allowed working frequency bands of the cell that meets the optional working bandwidth is searched one by one, and when the available frequency band is found to be found, the available frequency band is allocated to the cell;
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the allocation module is further configured to:
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the allocation module is also used to:
- the available frequency band satisfies: the frequency priority coefficient I Rseg of each basic frequency resource of the allowed working frequency band is less than or equal to a preset first available frequency priority coefficient threshold Th Rseg , and/or the permission
- the frequency priority coefficient I Band of the working frequency band is less than or equal to the preset second available frequency priority coefficient threshold Th Band .
- the allocation module is further configured to select an available frequency band according to the frequency priority coefficient I Band of the saved available frequency band, specifically:
- the allocation module is specifically configured to:
- the allocation module is specifically configured to:
- the allocation module is specifically configured to:
- the working frequency band is allowed to be allocated to the selected operating frequency band to the cell.
- the allocation module is specifically configured to:
- the allocation module is specifically configured to:
- the threshold value Th Rseg is reached, the search is stopped, and the determined allowed working frequency band is allocated to the cell, and the first frequency point priority coefficient threshold value Th Rseg is the minimum value of the interference that can be indicated.
- the allocation module is specifically configured to:
- the frequency resource allocated to the cell is orthogonal to the frequency resource of each neighboring cell, that is, the frequency resource of the neighboring cell does not overlap.
- the allocation module is further configured to:
- the optional working bandwidths of the cells are sorted in descending order, and the optional working bandwidth is obtained in an order of arrangement.
- the first determining module is specifically configured to:
- the allowed working frequency band of the cell that meets the allowed working bandwidth is divided into multiple basic frequency resources according to the basic unit of the frequency resource.
- the first determining module is further configured to:
- the first determining module is further configured to:
- the distribution module is further configured to:
- Refusing to allocate frequency resources to the cell and returning a message rejecting the cell access to the base station that turns on the cell.
- the embodiment of the present application further provides a network device.
- the network device may be a GW.
- a high-level network node such as a core network node or operation, OAM, or a super base station.
- the network device mainly includes:
- the processor 1300 is configured to read the program of the memory 1320 and perform the following processes:
- the frequency point priority coefficient characterizing interference of the neighboring cells adjacent to the cell location in the basic frequency resource to the cell, And/or a load of the neighboring cells within the basic frequency resource;
- the transceiver 1310 is configured to receive and send data under the control of the processor 1300.
- the memory 1320 is configured to save data used by the processor 1300 to perform operations.
- the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1300 and various circuits of memory represented by memory 1320.
- the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
- the bus interface provides an interface.
- Transceiver 1310 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
- the processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1320 can store data used by the processor 1300 in performing operations.
- determining a frequency priority coefficient of each of the basic frequency resources by determining each basic frequency resource in a allowed working frequency band of the cell, according to the frequency of the basic frequency resource
- the point priority coefficient is used to allocate frequency resources to the cell, and the frequency resource is divided into basic frequency resources to realize unified planning of frequency resources, and according to the frequency priority coefficient of each basic frequency resource, it is determined that the cell under the base station can be used.
- the frequency resources thereby achieving reasonable allocation of the base station frequency resources, effectively reducing or avoiding inter-cell interference.
- the frequency resources between the base stations can be rationally configured, the spectrum resources can be effectively utilized, and the spectrum efficiency can be maximized.
- the reasonable allocation of the base station frequency resources can reduce or even avoid interference between the base stations, improve the wireless transmission performance, and further improve the system capacity.
- the embodiment of the present application is particularly applicable to a scenario in which a cell is densely deployed. In this scenario, the frequency resource of the base station is configured, and the efficiency is higher and the utility is stronger.
- embodiments of the present application can be provided as a method, system, or computer program product.
- the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
- the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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Abstract
本申请公开了一种基站频率资源配置方法,用以实现基站频率资源的合理配置,避免或降低小区间干扰。该方法包括:确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源;确定每个所述基本频率资源的频点优先级系数,所述频点优先级系数表征与所述小区位置相邻的各相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,所述各相邻小区在所述基本频率资源内的负荷;根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源。本申请还公开了一种网络设备。
Description
本申请要求在2014年02月28日提交中国专利局、申请号为201410073301.7、发明名称为“一种基站频率资源配置方法及网络设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请涉及通信技术领域,尤其涉及一种基站频率资源配置方法及网络设备。
无线通信***中,信号通过无线环境传播,多接入点部署下(例如蜂窝网中的基站、无线局域网络(WLAN)***中的接入点(Access Point,AP)),如果相邻接入点采用相同的工作频率,在大多数***中会造成相邻小区干扰(如正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)***、码分多址(CDMA)***),从而造成频谱资源不能得到有效使用,降低无线***传输性能。
以OFDM***为例,长期演进(LTE)***是基于OFDM技术的***(4G)无线通信***,OFDM技术中基站为终端分配不同子载波的时频资源进行业务数据信号传输,小区内用户间没有干扰,但不同小区如果使用相同的频率资源则会造成小区间干扰。以时分双工的时分长期演进(TD-LTE)***为例,TD-LTE***中一个小区的上下行传输工作在相同频率上,干扰问题更为突出。
在多小区时分双工(TDD)网络中可能存在两类小区间干扰(共四种)。第一类小区间干扰发生在相邻小区传输方向相同的子帧上,如附图1a和附图1b所示,邻小区的基站下行传输对本小区中用户设备(UE)的下行接收造成的干扰称为类型(type)1干扰;邻小区中UE上行传输对本小区基站的上行接收造成的干扰称为type2干扰。第一类小区间干扰在TDD和FDD***中都存在,是一般意义上的邻小区干扰。
第二类小区间干扰则发生在相邻小区传输方向不同的子帧上。如附图2所示,当相邻小区同时进行不同方向的传输时,本小区基站上行接收可能受到邻小区基站下行发射信号的干扰,称为type 3干扰;同时邻小区UE下行接收则可能受到本小区终端上行发射信号的干扰,称为type 4干扰。第二类小区间干扰仅可能在TDD***中出现,特别是当相邻TDD小区灵活进行上下行资源配置时,第二类小区间干扰也称为TDD***的交叉时隙干扰。
当前LTE***中的干扰协调技术(Inter-cell Interference Coordination,ICIC)中,通
过基站与邻基站进行相邻小区的负荷指示和高干扰指示信息交互,基站下小区间采用分布式协调的方式,进行干扰协调,协调的方式可以为:如果小区1负荷高、干扰严重,邻小区2中心用户可以使用小区全部频段资源,减少边缘用户资源分配或者边缘用户只使用部分资源,以保证小区1用户的信号传输。但是,LTE***的ICIC技术信息交互粗糙,基站间资源协调不是很实时,当前仿真和应用都表明ICIC技术对于小区间干扰协调,提高***容量的效果不是很好。
当今社会,移动通信越来越普及,移动用户数大量增加,移动业务流量需求爆发式增长。针对当前社会发展趋势,正在研究的5G移动通信***提出1000倍流量增长,100倍连接器件数目,10Gbps峰值速率的能力需求。为应对这些需求,无线通信***在密集部署小区的同时,还必须最小化小区间干扰,以保证***性能。
密集小区部署场景具有自身的特点,包括:小区半径小,中心用户和边缘用户区别不明显,小区间干扰对所有用户都有影响;小区密集部署,不是所有小区间都有直接接口进行信令传输;由于小区密集,小区间干扰协调涉及的小区数目较多。密集小区部署场景下小区间干扰问题比宏网部署场景下更为突出和严重,而通过分布式信令交互,信令传输需求大,造成小区间接口负荷过重,且由于牵涉节点多,分布式干扰协调算法和效果都不会很好。
发明内容
本申请提供一种基站频率资源配置方法,用以实现基站频率资源的合理配置,避免或降低小区间干扰。
本申请实施例提供的具体技术方案如下:
一种基站频率资源配置方法,包括:
确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源;
确定每个所述基本频率资源的频点优先级系数,所述频点优先级系数表征与所述小区位置相邻的各相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,所述各相邻小区在所述基本频率资源内的负荷;
根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源。
其中,确定每个所述基本频率资源的所述频点优先级系数,可以包括如下操作:
确定每个所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷;
根据所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷,计算每个所述相邻小区对所述小区的单小区频点优先级系
数,以及根据每个所述相邻小区对所述小区的单小区频点优先级系数,计算所述基本频率资源的所述频点优先级系数,所述单小区频点优先级系数表征为单个相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,单个相邻小区在所述基本频率资源内的负荷。
其中,计算每个所述相邻小区对所述小区的单小区频点优先级系数,以及根据每个所述相邻小区对所述小区的单小区频点优先级系数,计算所述基本频率资源的所述频点优先级系数,可以包括如下操作:
针对每个所述相邻小区,计算第一权重因子与所述相邻小区在所述基本频率资源内的负荷的乘积,与第二权重因子与所述相邻小区在所述基本频率资源内对所述小区的干扰的乘积的和,获得每个所述相邻小区对所述小区的单小区频点优先级系数;
计算每个所述相邻小区对所述小区的所述单小区频点优先级系数的加权和,获得所述基本频率资源的所述频点优先级系数IRseg。
优选的,所述第一权重因子与第二权重因子的和为1;
所述相邻小区在所述基本频率资源内对所述小区的干扰为,所述相邻小区对所述小区的干扰测量值与干扰最大量化值的比值,所述相邻小区对所述小区的干扰测量值为在小区内测量得到的所述相邻小区的参考信号接收功率RSRP或者其他参考信号的测量强度值;
所述相邻小区在所述基本频率资源内的的负荷的取值范围为0到1,其中“0”表示所述相邻小区的资源没有被占用资源,“1”表示所述相邻小区的全部资源都被占用。
基于上述任意方法实施例,优选的,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,使得分配的所述频率资源与所述各相邻小区的频率资源正交。或者,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,使得分配的所述频率资源与所述各相邻小区的频率资源的中心频段不重合;或者,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,使得分配的所述频率资源的干扰最小和/或负荷最小。
为了使得分配的所述频率资源与所述各相邻小区的频率资源正交,确定每个所述基本频率资源的频点优先级系数,其一种实现方式包括如下操作:
将所述相邻小区在所述基本频率资源内对所述小区的干扰,作为所述相邻小区对所述小区的单小区频点优先级系数;
计算每个所述相邻小区的所述单小区频点优先级系数之和,获得所述基本频率资源的所述频点优先级系数IRseg。
在此基础上,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,可以包括如下操作:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg小于等于第一可用频点优先级系数门
限值ThRseg时,停止查找,将确定的所述允许工作频段分配给所述小区,所述第一频点优先级系数门限值ThRseg为能够指示的干扰的最小值。
为了使得分配的所述频率资源与所述各相邻小区的频率资源正交,确定每个所述基本频率资源的频点优先级系数,其另一种实现方式包括如下操作:
若所述基本频率资源未被所述相邻小区使用,则确定所述基本频率资源的所述频率优先级系数为零;
若所述基本频率资源被所述相邻小区使用,则确定所述基本频率资源的所述频点优先级系数为1。
在此基础上,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,可以包括如下操作:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg等于零时,停止查找,将确定的所述允许工作频段分配给所述小区。
基于上述任意方法实施例,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,可以包括如下操作:
为了使得分配的所述频率资源与所述各相邻小区的频率资源的中心频段不重合,或使得分配的所述频率资源的干扰最小和/或负荷最小,所述方法还包括:
根据所述基本频率资源的所述频点优先级系数IRseg,计算所述小区的满足可选工作带宽的各允许工作频段的频点优先级系数IBand。
在此基础上,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,可以包括如下操作:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到绝对可用频段时,将所述绝对可用频段分配给所述小区;所述绝对可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一绝对可用频点优先级系数门限值ThRseg0,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二绝对可用频点优先级系数门限值Th0。或者,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,可以包括如下操作:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。或者,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,可以包括如下操作:遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;所述可用频段满足:所
述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
逐一查找所述小区的符合可选工作带宽的各允许工作频段,若未查找到所述绝对可用频段时,一种处理方式如下:
遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
逐一查找所述小区的符合可选工作带宽的各允许工作频段,若未查找到所述绝对可用频段时,另一种处理方式如下:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
基于上述任意方法实施例,逐一查找所述小区的符合所述可选工作带宽的各允许工作频段之前,或者,遍历所述小区的符合所述可选工作带宽的各允许工作频段之前,还可以包括:
若所述小区存在多个所述可选工作带宽,将所述小区的各个所述可选工作带宽按照从大到小的顺序排序后,按照排列顺序获取所述可选工作带宽。
在计算所述小区的满足可选工作带宽的各允许工作频段的频点优先级系数IBand的基础上,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,可以包括如下操作:
将所述小区的符合各可选工作带宽的各允许工作频段的频点优先级系数IBand按照大小排序;
选择所述各允许工作频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述允许工作频段分配给所述小区;或者,
确定与所述各允许工作频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述允许工作频段,选择确定的各所述允许工作频段中工作带宽最大的允许工作频段,将选择的所述允许工作频段分配给所述小区。
在此基础上,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资
源,包括:
针对每个允许工作带宽,确定符合所述允许工作带宽的各允许工作频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述允许工作频段;
分别计算选择的每个所述允许工作频段的系数,所述系数为所述允许工作频段的允许工作带宽与所述允许工作频段的频段优先级系数IBand的乘积,以及与所述允许工作频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的允许工作频段,将确定的所述允许工作频段分配给所述小区。
基于上述任意方法实施例,若为所述小区分配与所述各相邻小区的频率资源的中心频段不重合的频率资源,所述允许工作频段的频点优先级系数IBand为:
所述允许工作频段的频点优先级系数IBand=mean(γ*IRseg)+Pfcenter,其中,mean(γ*IRseg)表示所述允许工作频段中包含的各基本频率资源的频段优先级系数IRseg的加权平均,γ表示权值,Pfcenter为用于表示反映所述允许工作频段的中心频点的重合情况的因子。
优选的,在所述允许工作频段的中心频点被所述相邻小区使用时,Pfcenter为无穷大值;在所述允许工作频段的中心频点未被所述相邻小区使用时,Pfcenter为零值。
基于上述任意方法实施例,若为所述小区分配干扰最小和/或负荷最小的频率资源,所述允许工作频段的频点优先级系数IBand为:
所述允许工作频段的频点优先级系数IBand=mean(γ*IRseg),其中,mean(γ*IRseg)表示所述允许工作频段中包含的各基本频率资源的频段优先级系数IRseg的加权平均,γ表示权值。
其中,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区,包括:
将所述可用频段的频点优先级系数IBand按照大小排序;
选择所述可用频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述可用频段分配给所述小区;或者,
确定与所述可用频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述可用频段,选择确定的各所述可用频段中工作带宽最大的可用频段,将选择的所述可用频段分配给所述小区。
在此基础上,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区,包括:
针对每个允许工作带宽,确定符合所述允许工作带宽的各可用频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述可用频段;
分别计算选择的每个所述可用频段的系数,所述系数为所述可用频段的允许工作带宽
与所述可用频段的频点优先级系数IBand的乘积,以及与所述可用频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的所述可用频段,将确定的所述可用频段分配给所述小区。
基于上述任意方法实施例,确定每个所述相邻小区在所述基本频率资源内对所述小区造成的干扰,包括:
所述集中节点根据基站的位置信息,确定所述相邻小区的位置,根据所述位置以及所述相邻小区的频率资源,确定所述相邻小区对所述小区的干扰;
或者,
所述集中节点接收基站上报的所述相邻小区对所述小区的干扰,所述干扰由所述基站对所述相邻小区进行干扰测量后确定;
或者,
所述集中节点将所述小区开启的历史记录中保存的、终端或基站测量的所述相邻小区的干扰,确定为所述相邻小区对所述小区的干扰。
基于上述任意方法实施例,确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源,包括:
根据所述小区的允许工作带宽与频率资源基本单位的对应关系,将所述小区的符合所述允许工作带宽的所述允许工作频段,按照所述频率资源基本单位划分为多个基本频率资源。
在此基础上,所述方法还包括:
所述集中节点接收基站与网络建立连接后发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
在此基础上,接收基站与网络建立连接后发送的频点和带宽能力信息之前,还包括:
所述基站接收触发节点发送的请求开启所述小区的请求消息。
基于上述任意方法实施,所述方法还可以包括:
所述集中节点通知基站开启所述小区,并接收所述基站发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
基于上述任意方法实施例,所述方法还可以包括:
所述集中节点拒绝为所述小区分配频率资源,并向开启所述小区的基站返回拒绝所述小区接入的消息。
在此基础上,所述方法还可以包括:
所述基站在设定时长后向所述集中节点重新发送为所述小区分配频率资源的请求。
基于上述任意方法实施例,所述方法还可以包括:
若同时为多个所述小区分配频率资源,以为所述小区分配具有较大带宽的频率资源为原则;
或者,以分配频率资源的所述小区的个数最多为原则。
一种网络设备,包括:
第一确定模块,用于确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源;
第二确定模块,用于确定每个所述基本频率资源的频点优先级系数,所述频点优先级系数表征与所述小区位置相邻的各相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,所述各相邻小区在所述基本频率资源内的负荷;
分配模块,用于根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源。
其中,所述第二确定模块具体用于:
确定每个所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷;
根据所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷,计算每个所述相邻小区对所述小区的单小区频点优先级系数,以及根据每个所述相邻小区对所述小区的单小区频点优先级系数,计算所述基本频率资源的所述频点优先级系数,所述单小区频点优先级系数表征为单个相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,单个相邻小区在所述基本频率资源内的负荷。
其中,所述第二确定模块具体用于:
针对每个所述相邻小区,计算第一权重因子与所述相邻小区在所述基本频率资源内的负荷的乘积,与第二权重因子与所述相邻小区在所述基本频率资源内对所述小区的干扰的乘积的和,获得每个所述相邻小区对所述小区的单小区频点优先级系数;
计算每个所述相邻小区对所述小区的所述单小区频点优先级系数的加权和,获得所述基本频率资源的所述频点优先级系数IRseg。
其中,所述分配模块具体用于:
根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,且使得分配的所述频率资源与所述各相邻小区的频率资源正交。
在此基础上,所述第二确定模块具体用于:
将所述相邻小区在所述基本频率资源内对所述小区的干扰,作为所述相邻小区对所述小区的单小区频点优先级系数;
计算每个所述相邻小区的所述单小区频点优先级系数之和,获得所述基本频率资源的所述频点优先级系数IRseg。
在此基础上,所述分配模块具体用于:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg小于等于第一可用频点优先级系数门限值ThRseg时,停止查找,将确定的所述允许工作频段分配给所述小区,所述第一频点优先级系数门限值ThRseg为能够指示的干扰的最小值。
其中,所述第二确定模块具体用于:
若所述基本频率资源未被所述相邻小区使用,则确定所述基本频率资源的所述频率优先级系数为零;
若所述基本频率资源被所述相邻小区使用,则确定所述基本频率资源的所述频点优先级系数为1。
在此基础上,所述分配模块具体用于:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg等于零时,停止查找,将确定的所述允许工作频段分配给所述小区。
其中,所述分配模块具体用于:
根据所述基本频率资源的所述频点优先级系数,为所述小区分配与所述各相邻小区的频率资源的中心频段不重合的频率资源;
或者,
根据所述基本频率资源的所述频点优先级系数,为所述小区分配干扰最小和/或负荷最小的频率资源。
其中,所述第二确定模块还用于:
根据所述基本频率资源的所述频点优先级系数IRseg,计算所述小区的满足可选工作带宽的各允许工作频段的频点优先级系数IBand。
在此基础上,所述分配模块具体用于:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到绝对可用频段时,将所述绝对可用频段分配给所述小区;
所述绝对可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一绝对可用频点优先级系数门限值ThRseg0,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二绝对可用频点优先级系数门限值Th0。
其中,所述分配模块还用于:
若未查找到所述绝对可用频段时,遍历所述小区的符合所述可选工作带宽的各允许工
作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
其中,所述分配模块还用于:
若未查找到所述绝对可用频段时,逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
其中,所述分配模块还用于:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
其中,所述分配模块还用于:
遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
基于上述任意网络设备实施例,所述分配模块还用于:
若所述小区存在多个所述可选工作带宽,将所述小区的各个所述可选工作带宽按照从大到小的顺序排序后,按照排列顺序获取所述可选工作带宽。
其中,所述分配模块具体用于:
将所述小区的符合各可选工作带宽的各允许工作频段的频点优先级系数IBand按照大小排序;
选择所述各允许工作频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述允许工作频段分配给所述小区;或者,
确定与所述各允许工作频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述允许工作频段,选择确定的各所述允许工作频段中工作带宽最大的允许工作频段,
将选择的所述允许工作频段分配给所述小区。
其中,所述分配模块具体用于:
针对每个允许工作带宽,确定符合所述允许工作带宽的各允许工作频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述允许工作频段;
分别计算选择的每个所述允许工作频段的系数,所述系数为所述允许工作频段的允许工作带宽与所述允许工作频段的频段优先级系数IBand的乘积,以及与所述允许工作频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的允许工作频段,将确定的所述允许工作频段分配给所述小区。
其中,所述分配模块具体用于:
将保存的各所述可用频段的频点优先级系数IBand按照大小排序;
选择所述可用频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述可用频段分配给所述小区;或者,
确定与所述可用频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述可用频段,选择确定的各所述可用频段中工作带宽最大的可用频段,将选择的所述可用频段分配给所述小区。
其中,所述分配模块具体用于:
针对每个允许工作带宽,确定符合所述允许工作带宽的各可用频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述可用频段;
分别计算选择的每个所述可用频段的系数,所述系数为所述可用频段的允许工作带宽与所述可用频段的频点优先级系数IBand的乘积,以及与所述可用频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的所述可用频段,将确定的所述可用频段分配给所述小区。
其中,所述第二确定模块具体用于:
根据基站的位置信息,确定所述相邻小区的位置,根据所述位置以及所述相邻小区的频率资源,确定所述相邻小区对所述小区的干扰;
或者,
接收基站上报的所述相邻小区对所述小区的干扰,所述干扰由所述基站对所述相邻小区进行干扰测量后确定;
或者,
将所述小区开启的历史记录中保存的、终端或基站测量的所述相邻小区的干扰,确定为所述相邻小区对所述小区的干扰。
其中,所述第一确定模块具体用于:
根据所述小区的允许工作带宽与频率资源基本单位的对应关系,将所述小区的符合所述允许工作带宽的所述允许工作频段,按照所述频率资源基本单位划分为多个基本频率资源。
其中,所述第一确定模块还用于:
接收基站与网络建立连接后发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
其中,所述第一确定模块还用于:
通知基站开启所述小区,并接收所述基站发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
其中,所述分配模块还用于:
拒绝为所述小区分配频率资源,并向开启所述小区的基站返回拒绝所述小区接入的消息。
一种网络设备,包括:
处理器,用于读取存储器的程序,执行下列过程:
确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源;
确定每个所述基本频率资源的频点优先级系数,所述频点优先级系数表征与所述小区位置相邻的各相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,所述各相邻小区在所述基本频率资源内的负荷;
根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源;
收发机,用于在处理器的控制下接收和发送数据;
存储器,用于保存处理器执行操作时所使用的数据。
其中,处理器具体用于读取存储器的程序,执行下列过程:
确定每个所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷;
根据所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷,计算每个所述相邻小区对所述小区的单小区频点优先级系数,以及根据每个所述相邻小区对所述小区的单小区频点优先级系数,计算所述基本频率资源的所述频点优先级系数,所述单小区频点优先级系数表征为单个相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,单个相邻小区在所述基本频率资源内的负荷。
其中,处理器具体用于读取存储器的程序,执行下列过程:
针对每个所述相邻小区,计算第一权重因子与所述相邻小区在所述基本频率资源内的
负荷的乘积,与第二权重因子与所述相邻小区在所述基本频率资源内对所述小区的干扰的乘积的和,获得每个所述相邻小区对所述小区的单小区频点优先级系数;
计算每个所述相邻小区对所述小区的所述单小区频点优先级系数的加权和,获得所述基本频率资源的所述频点优先级系数IRseg。
其中,处理器具体用于读取存储器的程序,执行下列过程:
根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,且使得分配的所述频率资源与所述各相邻小区的频率资源正交。
在此基础上,处理器具体用于读取存储器的程序,执行下列过程:
将所述相邻小区在所述基本频率资源内对所述小区的干扰,作为所述相邻小区对所述小区的单小区频点优先级系数;
计算每个所述相邻小区的所述单小区频点优先级系数之和,获得所述基本频率资源的所述频点优先级系数IRseg。
在此基础上,处理器具体用于读取存储器的程序,执行下列过程:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg小于等于第一可用频点优先级系数门限值ThRseg时,停止查找,将确定的所述允许工作频段分配给所述小区,所述第一频点优先级系数门限值ThRseg为能够指示的干扰的最小值。
其中,处理器具体用于读取存储器的程序,执行下列过程:
若所述基本频率资源未被所述相邻小区使用,则确定所述基本频率资源的所述频率优先级系数为零;
若所述基本频率资源被所述相邻小区使用,则确定所述基本频率资源的所述频点优先级系数为1。
在此基础上,处理器具体用于读取存储器的程序,执行下列过程:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg等于零时,停止查找,将确定的所述允许工作频段分配给所述小区。
其中,处理器具体用于读取存储器的程序,执行下列过程:
根据所述基本频率资源的所述频点优先级系数,为所述小区分配与所述各相邻小区的频率资源的中心频段不重合的频率资源;
或者,
根据所述基本频率资源的所述频点优先级系数,为所述小区分配干扰最小和/或负荷最小的频率资源。
其中,处理器还用于读取存储器的程序,执行下列过程:
根据所述基本频率资源的所述频点优先级系数IRseg,计算所述小区的满足可选工作带宽的各允许工作频段的频点优先级系数IBand。
在此基础上,处理器具体用于读取存储器的程序,执行下列过程:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到绝对可用频段时,将所述绝对可用频段分配给所述小区;
所述绝对可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一绝对可用频点优先级系数门限值ThRseg0,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二绝对可用频点优先级系数门限值Th0。
其中,处理器还用于读取存储器的程序,执行下列过程:
若未查找到所述绝对可用频段时,遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
其中,处理器还用于读取存储器的程序,执行下列过程:
若未查找到所述绝对可用频段时,逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
其中,处理器还用于读取存储器的程序,执行下列过程:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
其中,处理器还用于读取存储器的程序,执行下列过程:
遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
基于上述任意网络设备实施例,处理器还用于读取存储器的程序,执行下列过程:
若所述小区存在多个所述可选工作带宽,将所述小区的各个所述可选工作带宽按照从大到小的顺序排序后,按照排列顺序获取所述可选工作带宽。
其中,处理器具体用于读取存储器的程序,执行下列过程:
将所述小区的符合各可选工作带宽的各允许工作频段的频点优先级系数IBand按照大小排序;
选择所述各允许工作频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述允许工作频段分配给所述小区;或者,
确定与所述各允许工作频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述允许工作频段,选择确定的各所述允许工作频段中工作带宽最大的允许工作频段,将选择的所述允许工作频段分配给所述小区。
其中,处理器具体用于读取存储器的程序,执行下列过程:
针对每个允许工作带宽,确定符合所述允许工作带宽的各允许工作频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述允许工作频段;
分别计算选择的每个所述允许工作频段的系数,所述系数为所述允许工作频段的允许工作带宽与所述允许工作频段的频段优先级系数IBand的乘积,以及与所述允许工作频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的允许工作频段,将确定的所述允许工作频段分配给所述小区。
其中,处理器具体用于读取存储器的程序,执行下列过程:
将保存的各所述可用频段的频点优先级系数IBand按照大小排序;
选择所述可用频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述可用频段分配给所述小区;或者,
确定与所述可用频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述可用频段,选择确定的各所述可用频段中工作带宽最大的可用频段,将选择的所述可用频段分配给所述小区。
其中,处理器具体用于读取存储器的程序,执行下列过程:
针对每个允许工作带宽,确定符合所述允许工作带宽的各可用频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述可用频段;
分别计算选择的每个所述可用频段的系数,所述系数为所述可用频段的允许工作带宽与所述可用频段的频点优先级系数IBand的乘积,以及与所述可用频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的所述可用频段,将确定的所述可用频段分配给所述
小区。
其中,处理器具体用于读取存储器的程序,执行下列过程:
根据基站的位置信息,确定所述相邻小区的位置,根据所述位置以及所述相邻小区的频率资源,确定所述相邻小区对所述小区的干扰;
或者,
接收基站上报的所述相邻小区对所述小区的干扰,所述干扰由所述基站对所述相邻小区进行干扰测量后确定;
或者,
将所述小区开启的历史记录中保存的、终端或基站测量的所述相邻小区的干扰,确定为所述相邻小区对所述小区的干扰。
其中,处理器具体用于读取存储器的程序,执行下列过程:
根据所述小区的允许工作带宽与频率资源基本单位的对应关系,将所述小区的符合所述允许工作带宽的所述允许工作频段,按照所述频率资源基本单位划分为多个基本频率资源。
其中,处理器还用于读取存储器的程序,执行下列过程:
接收基站与网络建立连接后发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
其中,处理器还用于读取存储器的程序,执行下列过程:
通知基站开启所述小区,并接收所述基站发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
其中,处理器还用于读取存储器的程序,执行下列过程:
拒绝为所述小区分配频率资源,并向开启所述小区的基站返回拒绝所述小区接入的消息。
基于上述技术方案,本申请实施例中,通过确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源,确定每个所述基本频率资源的频点优先级系数,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,通过将频率资源划分为基本频率资源,实现对频率资源的统一规划,根据每个基本频率资源的频点优先级系数,确定基站下小区可以使用的频率资源,从而实现了对基站频率资源的合理配置,有效降低或避免了小区间干扰。
图1a为现有技术中小区间干扰的示意图;
图1b为现有技术中另一小区间干扰的示意图;
图2为现有技术中另一小区间干扰的示意图;
图3为本申请实施例中对基站频率资源进行配置的方法流程图;
图4为本申请实施例中基站工作带宽与Rseg的关系示意图;
图5为本申请实施例中按照各可选工作带宽查找可用频段的过程示意图;
图6为本申请实施例中基站请求分配频率资源的过程示意图;
图7为本申请实施例中集中节点触发分配频率资源的过程示意图;
图8为本申请实施例中触发节点触发分配频率资源的过程示意图;
图9为本申请实施例中触发节点针对集中节点触发分配频率资源的过程示意图;
图10为本申请实施例中为不同小区分配正交的频率资源的效果示意图;
图11为本申请实施例中为不同小区分配中心频段不重合的频率资源的效果示意图;
图12为本申请实施例中网络设备的示意图;
图13为本申请实施例中网络设备的结构示意图。
为了实现对基站频率资源的合理配置,有效降低或避免小区间干扰,本申请实施例提供了一种基站频率资源配置方法及装置。
下面结合附图对本申请优选的实施方式进行详细说明。
本申请实现基站频率资源配置的核心思想为:集中节点将小区工作频段按照频率资源基本单位划分为多个基本频率资源,维护各基本频率资源的参考参数,根据各基本频率资源的参考参数控制多个基站或多个小区的频率资源分配。以下各实施例中,各基本频率资源的参考参数为频点优先级系数。
以下各实施例中,集中节点可以是高层网络节点,例如,独立网关(GW)或核心网节点或操作、管理和维护(Operation Administration Maintenance,OAM);该集中节点也可以是一个基站,该基站可以管理多个基站或该基站下的多个小区的频率资源分配,可以看作超级基站。
本申请实施例中,如附图3所示,对基站频率资源进行配置的详细方法流程如下:
步骤301:确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源。
在一个具体实施中,基站接收触发节点发送的请求开启所述小区的请求消息并与网络建立连接后,向集中节点发送频点和带宽能力信息。
集中节点接收基站与网络建立连接后发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
在另一个具体实施中,集中节点通知基站开启所述小区,并接收所述基站发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
其中,允许工作带宽是指落实到具体频段上的频率范围,假设小区的可选工作带宽为20MHz,允许工作带宽为3.4GHz-3.6GHz频段内的其中20MHz。允许工作频段为小区所属基站支持的工作频段(即出厂设置的工作频段)与运营商为该基站分配的工作频段的交集。
本申请实施例中,根据预设的小区的允许工作带宽与频率资源基本单位的对应关系,将待分配频率资源的小区的符合允许工作带宽的允许工作频段,按照与允许工作带宽对应的频率资源基本单位划分为多个基本频率资源,基本频率资源为一个频率资源基本单位大小的频率资源。
其中,频率资源基本单位是指可组成小区工作频段的基本频率资源,在基于长期演进(LTE)***中,包括长期演进(LTE)、先进的长期演进(LTE-Advanced)、满足热点和室内覆盖的长期演进(LTE-Hi)等***,小区带宽有1.4兆赫兹(MHz)、3MHz、5MHz、10MHz、20MHz几种,后续可能有更大带宽。
例如,若小区的工作带宽为1.4兆赫兹(MHz),频率资源基本单位(Rseg)为1.4兆赫兹,1.4MHz是传输***消息和公共信道主同步信号(Primary Synchronization Signal,PSS)/从同步信号(Secondary Synchronization Signal,SSS)的带宽,基站带宽分配为1个频率资源基本单位。
又例如,若小区的工作带宽为3兆赫兹,Rseg为1.25兆赫兹或1.5兆赫兹,以1.25MHz为Rseg便于组成更大带宽,而以1.5MHz为Rseg可以将不同小区的中心频点错开,保证***消息和公共信道互不干扰。若Rseg为1.25兆赫兹,基站带宽分配的中心频点为2段Rseg的交点;若Rseg为1.5兆赫兹,基站带宽分配为Rseg的整数倍。
又例如,若小区的工作带宽为5兆赫兹以上,Rseg为1.25兆赫兹或1.5兆赫兹或5兆赫兹。Rseg采用1.25Mhz或2.5MHz是为了将不同小区的中心频点错开,保证***消息和公共信道互不干扰。基站带宽分配为Rseg的整数倍,具体为:基站带宽等于Rseg或2N×Rseg,其中N为大于等于1的正整数,其中,基站带宽等于Rseg的情况仅适用于Rseg为5MHz且基站带宽也为5MHz的场景。
如附图4所示,以基站工作带宽为5MHz为例,Rseg=2.5MHz,中心频点起点=3402.5MHz,基站带宽分配为5MHz的整数倍。基站1频率资源分配为Rseg1+Rseg2,即基站1的工作频段为3400-3405MHz;基站2频率资源分配为Rseg2+Rseg3,即基站2的工作频段为3402.5-3407.5MHz。
步骤302:确定每个所述基本频率资源的频点优先级系数,频点优先级系数表征为与待分配频率资源的小区位置相邻的各相邻小区在基本频率资源内对小区造成的干扰,和/或,各相邻小区在基本频率资源内的负荷。
集中节点和基站分别维护每个基本频率资源的频点优先级表,该频点优先级表中每个基本频率资源都有对应的频点优先级系数,基本频率资源的频点优先级系数的大小用于指示该段频率资源是否能够分配给基站使用,使该基站达到较好的传输性能。
本申请实施例中,频点优先级表中基本频率资源的频点优先级系数的值越大,表示该段频率资源可使用的优先级越低,频点优先级系数的值为零时,表示该段频率资源的可使用的优先级为最高。
其中,频点优先级表可以基于小区簇维护,即每个包含多个相邻小区的小区簇维护独立的频点优先级表;也可以基于小区维护,即每个小区维护一个包含其相邻小区干扰影响的频点优先级表。
基于小区簇维护的频点优先级表如表1所示,频点优先级表在集中节点和基站都要维护。频点优先级表只考虑小区允许工作频段内的各Rseg对应的基本频率资源的频点优先级系数,NaN表示已超出小区允许工作频段范围。其中,cell1~celln分别为小区1~小区n的标识,IRsegi表示编号为i的Rseg对应的基本频率资源的频点优先级系数,i的取值范围为[0,N]。
表1 基于小区簇维护的频点优先级表
基于小区维护的频点优先级表如表2所示,频点优先级表在集中节点和基站都要维护。频点优先级表只考虑小区允许工作频段内的Rseg频点优先级系数,其中IRsegBi表示小区允许工作频段内的编号为Bi的Rseg对应的基本频率资源的频点优先级系数。
表2 基于小区维护的频点优先级表
Rseg编号 | B0 | B1 | …… | Bk |
cell1 | IRsegB0 | IRsegB1 | …… | IRsegBk |
本申请实施例中,确定每个所述相邻小区在所述基本频率资源内对所述小区造成的干
扰,和/或所述相邻小区在所述基本频率资源内的负荷;根据所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷,计算每个所述相邻小区对所述小区的单小区频点优先级系数,以及根据每个所述相邻小区对所述小区的单小区频点优先级系数,计算所述基本频率资源的所述频点优先级系数。其中,单小区频点优先级系数表征为单个相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,单个相邻小区在所述基本频率资源内的负荷。
具体计算方法可参见以下两种具体实施方式:
第一种具体实施方式中,针对每个相邻小区,计算第一权重因子a1与该相邻小区在基本频率资源内的负荷的乘积,与第二权重因子a2与该相邻小区在基本频率资源内对该小区的干扰的乘积的和,获得每个相邻小区对该小区的单小区频点优先级系数;
计算每个所述相邻小区对所述小区的所述单小区频点优先级系数的加权和,获得所述基本频率资源的所述频点优先级系数IRseg。
一个具体实现中,分别计算每个相邻小区的单小区频点优先级系数与该相邻小区对应的权重系数的乘积后求和,获得基本频率资源的频点优先级系数IRseg。
其中,基本频率资源内,相邻小区celln对待分配频率资源的小区cell1的单小区频点优先级系数表示为:
icelln-cell1=a1*celln小区负荷+a2*celln对cell1的小区干扰(公式1)。
实际应用中,对于小区celln占用的各基本频率资源,可以分别计算各频段中的基本频率资源的icelln-cell1或者各频段中的基本频率资源的icelln-cell1取相同值,这取决于celln在基本频率资源内的小区负荷和/或celln在基本频率资源内对小区的干扰是按不同频率资源计算的窄带测量值,还是全部小区带宽上的宽带测量值。
基本频率资源内,小区cell1频点优先级系数可表示为:
IRseg=∑βn*icelln-cell1 (公式2),
其中,βn表示小区celln对应的权重系数。
实际应用中,若不区分不同相邻小区的干扰,相邻小区对应的权重系数可以固定为1。
该具体实施中,若需要使单小区频点优先级系数归一化,可以进一步规定:
第一权重因子与第二权重因子的和为1;
所述相邻小区在基本频率资源内对小区的干扰为,所述相邻小区对所述小区的干扰测量值与干扰最大量化值的比值,所述相邻小区对所述小区的干扰测量值为在小区内测量得到的所述相邻小区的参考信号接收功率(RSRP)或者其他参考信号的测量强度值;
所述相邻小区的负荷的取值范围为0到1,其中“0”表示所述相邻小区的资源没有被占用资源,“1”表示所述相邻小区的全部资源都被占用。
第二种具体实施方式中,将所述相邻小区在基本频率资源内对所述小区的干扰,作为
所述相邻小区对所述小区的单小区频点优先级系数;
计算每个所述相邻小区的所述单小区频点优先级系数之和,获得所述基本频率资源的所述频点优先级系数IRseg。
本申请实施例中还提供了一种确定每个基本频率资源的频点优先级系数的简化方式,具体为:
若所述基本频率资源未被所述相邻小区使用,则确定所述基本频率资源的所述频率优先级系数为零;
若所述基本频率资源被所述相邻小区使用,则确定所述基本频率资源的所述频点优先级系数为1。
本申请实施例中,确定每个相邻小区在基本频率资源内对待分配频率资源的小区造成的干扰,具体可以有以下几种方式:
所述集中节点根据基站的位置信息,确定所述相邻小区的位置,根据所述位置以及所述相邻小区的频率资源,确定所述相邻小区对所述小区的干扰;
或者,
所述集中节点接收基站上报的所述相邻小区对所述小区的干扰,所述干扰由所述基站对所述相邻小区进行干扰测量后确定;
或者,
所述集中节点将所述小区开启的历史记录中保存的、终端或基站测量的所述相邻小区的干扰,确定为所述相邻小区对所述小区的干扰。
进一步地,本申请实施例中,在确定每个基本频率资源的频点优先级系数后,根据各基本频率资源的所述频点优先级系数IRseg,计算小区的符合可选工作带宽的各允许工作频段的频点优先级系数IBand。其中,允许工作频段的频点优先级系数表征为与小区位置相邻的各相邻小区在该允许工作频段内对小区造成的干扰,和/或,各相邻小区在该允许工作频段内的负荷。
本申请实施例中,根据为小区分配频率资源时,是否考虑中心频段的重合情况,各允许工作频段的频点优先级系数IBand有以下两种计算方式,具体为:
第一种计算方式,要求分配给小区的工作频段的中心频点与其它小区的工作频段的中心频点不重合,具体为:
所述允许工作频段的频点优先级系数IBand=mean(γ*IRseg)+Pfcenter,其中,mean(γ*IRseg)表示所述允许工作频段中包含的各基本频率资源的频段优先级系数IRseg的加权平均,γ表示权值,Pfcenter为用于表示反映所述允许工作频段的中心频点的重合情况的因子。
优选地,在所述允许工作频段的中心频点被所述相邻小区使用时,Pfcenter为无穷大值;
在所述允许工作频段的中心频点未被所述相邻小区使用时,Pfcenter为零值。
第二种计算方式,不考虑分配给小区的工作频段的中心频点与其它小区的中心频点的重合情况,具体为:
允许工作频段的频点优先级系数IBand=mean(γ*IRseg),其中,mean(γ*IRseg)表示所述允许工作频段中包含的各基本频率资源的频段优先级系数IRseg的加权平均,γ表示权值。
步骤303:根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源。
优选地,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,且使得分配的频率资源与各相邻小区的频率资源正交;
或者,
根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,且使得分配的频率资源与各相邻小区的频率资源的中心频段不重合;
或者,
根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,且使得分配的频率资源的干扰最小和/或负荷最小。
本申请实施例中,若同时为多个小区分配频率资源,以为小区分配具有较大带宽的频率资源为原则;或者,以分配频率资源的小区的个数最多为原则。
本申请实施例中,根据各基本频率资源的频点优先级系数,为小区分配频率资源可以有以下几种具体实现方式:
第一种具体实现方式中,首先查找符合可选工作带宽的各允许工作频段中的绝对可用频段,若存在直接采用该绝对可用频段分配给该小区,若不存在,进一步查找可用频段。
具体为:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到绝对可用频段时,将所述绝对可用频段分配给所述小区;
所述绝对可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一绝对可用频点优先级系数门限值ThRseg0,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二绝对可用频点优先级系数门限值Th0。
若未查找到所述绝对可用频段,可以有以下两种查找可用频段的方式:
第一种,遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小
于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
第二种,逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
第二种具体实现方式中,查找符合可选工作带宽的各允许工作频段中的可用频段,基于查找到的可用频段为小区分配频率资源,具体有以下两种实现方式:
第一种,逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
第二种,遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
优选地,以上第一种和第二种具体实现方式中,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区时,可以根据可用频段的频点优先级系数IBand选择可用频段,具体为:
将所述可用频段的频点优先级系数IBand按照大小排序;
选择所述可用频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述可用频段分配给所述小区;或者,
确定与所述可用频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述可用频段,选择确定的各所述可用频段中工作带宽最大的可用频段,将选择的所述可用频段分配给所述小区。
在一个优选的实施方式中,根据可用频段的频点优先级系数IBand选择可用频段,具体为:
针对每个允许工作带宽,确定符合所述允许工作带宽的各可用频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述可用频段;
分别计算选择的每个所述可用频段的系数,所述系数为所述可用频段的允许工作带宽
与所述可用频段的频点优先级系数IBand的乘积,以及与所述可用频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的所述可用频段,将确定的所述可用频段分配给所述小区。
第三种具体实现方式中,根据各允许工作频段的频点优先级系数IBand为小区分配频率资源,具体为:
将所述小区的符合各可选工作带宽的各允许工作频段的频点优先级系数IBand按照大小排序;
选择所述各允许工作频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述允许工作频段分配给所述小区;或者,
确定与所述各允许工作频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述允许工作频段,选择确定的各所述允许工作频段中工作带宽最大的允许工作频段,将选择的所述允许工作频段分配给所述小区。
一个优选的实施例中,针对每个允许工作带宽,确定符合所述允许工作带宽的各允许工作频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述允许工作频段;
分别计算选择的每个所述允许工作频段的系数,所述系数为所述允许工作频段的允许工作带宽与所述允许工作频段的频段优先级系数IBand的乘积,以及与所述允许工作频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的允许工作频段,将确定的所述允许工作频段分配给所述小区。
以上第一种~第三种具体实现方式中,若为小区分配与各相邻小区的频率资源的中心频段不重合的频率资源,各允许工作频段的频点优先级系数IBand采用步骤302中提供的第一种计算方式;若为小区分配干扰最小和/或负荷最小的频率资源,各允许工作频段的频点优先级系数IBand采用步骤302中提供的第二种计算方式。
第四种具体实现方式中,相应于步骤302中计算基本频率资源的频点优先级系数的第二种具体实施方式,根据基本频率资源的所述频点优先级系数,为小区分配频率资源,具体过程为:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg小于等于第一可用频点优先级系数门限值ThRseg时,停止查找,将确定的所述允许工作频段分配给所述小区,所述第一频点优先级系数门限值ThRseg为能够指示的干扰的最小值。
第五种具体实现方式中,相应于步骤302中计算基本频率资源的频点优先级系数的简化方式,根据基本频率资源的所述频点优先级系数,为小区分配频率资源,具体过程为:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg等于零时,停止查找,将确定的所述允许工作频段分配给所述小区。
以上第四~第五具体实施方式,为小区分配的频率资源与各相邻小区的频率资源正交,也就是与相邻小区的频率资源没有交叠。
优选地,以上第一~五种具体实现方式中,逐一查找所述小区的符合所述可选工作带宽的各允许工作频段之前,或者,遍历所述小区的符合所述可选工作带宽的各允许工作频段之前,若所述小区存在多个所述可选工作带宽,将所述小区的各个所述可选工作带宽按照从大到小的顺序排序后,按照排列顺序获取所述可选工作带宽。在获取一个可选工作带宽进行查找或遍历符合该可选工作带宽的各允许工作频段后,若需要继续查找绝对可用频段或可用频段,按照排列顺序继续获取下一个可选工作带宽查找或遍历符合该可选工作带宽的各允许工作频段。如附图5所示为按照各可选工作带宽从大到小的排列顺序逐一查找可用频段的过程。
优选地,在集中节点未查找到可以分配给当前待分配频率资源的小区的频率资源时,拒绝为所述小区分配频率资源,并向开启所述小区的基站返回拒绝所述小区接入的消息。
优选地,基站接收到集中节点发送的拒绝所述小区接入的消息后,设置定时器,在达到设定的时长后重新向集中节点发送为小区分配频率资源的请求。
以下通过七个具体实施例对本申请实施例提供的基站频率资源配置方法进行详细说明。
第一具体实施例,如附图6所示,由基站请求为新开启的小区分配频率资源的具体过程如下:
该具体实施例中,基站开机或基站要启动该基站下的一个小区时,向集中节点发送请求,集中节点为新开启的小区分配频率资源。
步骤601:基站与网络建立连接,向集中节点上报频点、带宽能力信息。
步骤602:可选地,集中节点如果可以确定新开启的小区的相邻小区的基本信息,通知基站该相邻小区的基本信息,该相邻小区的基本信息主要是相邻小区的频点信息。
步骤603:集中节点确定并维护频点优先级表中的参数(频点优先级系数),基于基站所在的小区簇或基于该基站开启的小区维护频点优先级表,其中,确定频点优先级表中的频点优先级系数的方法有如下几种:
第一种,集中节点根据基站的位置信息或其他信息,确定需要分配频率资源的新开启的小区的相邻小区,根据相邻小区的位置关系和频率资源确定该相邻小区对新开启的小区的干扰,结合该相邻小区在各基本频率资源内的负荷,根据公式1、公式2确定各个基本频率资源上新开启的小区的频点优先级系数;
第二种,基站进行相邻小区干扰测量,如测量相邻小区RSRP、路损等,确定相邻小区对新开启的小区的干扰情况,并上报给集中节点,集中节点结合相邻小区在各基本频率资源内的负荷,根据公式1、公式2确定各个基本频率资源上新开启的小区的频点优先级系数;
第三种,集中节点根据该新开启的小区以前开启的历史记录中保存的、该小区下的终端测量的相邻小区的干扰,或者,该历史记录中保存的、基站测量的相邻小区的干扰,作为相邻小区对新开启的小区的干扰,结合相邻小区在各基本频率资源内的负荷,根据公式1和公式2确定各个基本频率资源上新开启的小区的频点优先级系数。
步骤604:集中节点根据频点优先级表中的各频点优先级系数,查找可用频段分配给该新开启的小区,为该新开启的小区配置频点和带宽,通知基站该新开启的小区的频点优先级表和相邻小区信息等参考信息。
如果没有找到可用频段,回复基站拒绝该新开启的小区接入的消息。
如果集中节点拒绝为新开启的小区配置频率资源,基站可设置定时器,在一定时间间隔后重新发起接入请求。
第二具体实施例,如附图7所示,集中节点为了满足区域内业务数据量需求等原因,触发基站开启新的小区,并为该新开启的小区配置频率资源的具体过程如下:
步骤701:集中节点通知基站开启新的小区,可选地,集中节点告知基站新开启的小区的相邻小区的信息,主要是频点信息;
步骤702:基站向集中节点上报频点、带宽能力信息,可选地,还上报测量信息;
步骤703:集中节点确定并维护频点优先级表中的参数(频点优先级系数),基于基站所在的小区簇或基于该基站已开启的小区维护频点优先级表,确定频点优先级表中的各频点优先级系数的方法有如下几种:
第一种,集中节点根据基站的位置信息或其他信息,确定需要分配频率资源的新开启的小区的相邻小区,根据相邻小区与新开启的小区的位置关系和相邻小区的频率资源,确定相邻小区对新开启的小区的干扰,结合相邻小区在各基本频率资源内的负荷,根据公式1、公式2确定各个基本频率资源上新开启的小区的频点优先级系数。该方法中,如果集中节点已获知新开启的小区的频点和带宽能力信息,可以省略步骤701和步骤702;
第二种,基站进行相邻小区的干扰测量,如测量相邻小区的RSRP、路损等,确定相邻小区对新开启的小区的干扰情况,并上报给集中节点;集中节点结合相邻小区在各基本频率资源内的负荷,根据公式1和公式2确定各个基本频率资源上新开启小区的频点优先级系数;
第三种,集中节点根据该新开启的小区以前开启的历史记录中保存的、该小区下的终端测量的相邻小区对新开启的小区的干扰,或者,该历史记录中保存的、基站测量的相邻
小区对新开启的小区的干扰,作为相邻小区对新开启的小区的干扰,结合相邻小区在各基本频率资源内的负荷,根据公式1和公式2确定各个基本频率资源上新开启的小区的频点优先级系数。该方法中,如果集中节点已获知新开启的小区的频点和带宽能力信息,可以省略步骤701和步骤702。
步骤704:集中节点根据频点优先级表中的各频点优先级系数,查找可用频段分配给该新开启的小区,为该新开启的小区配置频点和带宽,通知基站该新开启的小区的频点优先级表和相邻小区信息等参考信息。
如果没有找到可用频段,回复基站拒绝该新开启的小区接入的消息。
如果集中节点拒绝为新开启的小区配置频率资源,基站可设置定时器,在一定时间间隔后重新发起接入请求。
第三具体实施例中,新小区的开启可以是由其它网络节点触发的,例如宏小区可以触发覆盖的小小区的开启。其它网络节点可以通知基站开启新的小区,并由开启新的小区的基站通知集中节点为新开启的小区配置频率资源;或者是,其它网络节点通知集中节点开启新的小区并为新开启的小区配置频率资源。
该具体实施例中,将触发开启新的小区的其它网络节点称为触发节点。
其中,如附图8所示,触发节点针对基站触发开启新的小区的具体过程如下:
步骤801:触发节点向基站发送请求开启新的小区的请求消息,具体实现中,该请求消息中可以仅包括1比特(bit)开启请求,也可以包含其他信息,如小区位置信息、覆盖信息、数据量信息或带宽需求信息等;
步骤802:基站与网络建立连接,向集中节点上报频点和带宽能力信息;
步骤803:可选地,集中节点如果可以确定新开启的小区的相邻小区的基本信息,通知基站相邻小区的基本信息,该基本信息主要是频点信息;
步骤804:集中节点基于基站所在的小区簇或基于该基站已开启的小区确定并维护频点优先级表中的频点优先级系数,确定频点优先级系数的方法与第一具体实施例中确定频点优先级系数的方法相同,此处不再赘述。
步骤805:集中节点根据频点优先级表中的各频点优先级系数,查找可用频段分配给该新开启的小区,为该新开启的小区配置频点和带宽,通知基站该新开启的小区的频点优先级表和相邻小区信息等参考信息。
如果没有找到可用频段,回复基站拒绝该新开启的小区接入的消息。
步骤806:可选地,基站根据集中节点返回的为新开启的小区配置频率资源的通知,向触发节点反馈新开启的小区开启成功的消息;或者,基站根据集中节点返回的拒绝该新开启的小区接入的消息,向触发节点反馈拒绝新开启的小区接入的消息。
如果集中节点拒绝为新小区配置资源,触发节点或基站可设置定时器,在一定时间间
隔后重新发起接入请求。
其中,如附图9所示,触发节点针对集中节点触发的开启新的小区的具体过程如下:
步骤901:触发节点向集中节点发送开启新的小区的请求消息,请求消息中可以只包括1bit开启请求,也可以包含其他信息,如小区位置信息、覆盖信息、数据量信息或带宽需求信息等;
步骤902至步骤904的具体过程与第二具体实施例中步骤701至步骤703的过程相同,此处不再赘述。
步骤905:集中节点根据频点优先级表中的各频点优先级系数,查找可用频段分配给该新开启的小区,为该新开启的小区配置频点和带宽,通知基站该新开启的小区的频点优先级表和相邻小区信息等参考信息。
如果没有找到可用频段,回复基站拒绝该新开启的小区接入的消息。
步骤906:可选地,集中节点向触发节点反馈小区开启成功的消息,或者,集中节点向触发节点反馈拒绝新开启的小区接入的消息。
如果集中节点拒绝为新开启的小区配置频率资源,触发节点可设置定时器,在一定时间间隔后重新发起接入请求。
第四具体实施例中,集中节点为不同小区分配完全正交的频率资源,即小区簇中或相邻小区使用的频率资源与分配给新接入的小区的频率资源完全不同,即没有频率交叠,分配效果如附图10所示,具体实现过程如下:
假设新接入的小区(即待分配频率资源的小区或上述各具体实施例中的新开启的小区)为cell1。
步骤一,集中节点根据新接入的小区的相邻小区的干扰计算基本频率资源内的单小区频点优先级系数,具体为:将相邻小区在基本频率资源上对新接入的小区的干扰,作为该相邻小区对该新接入的小区的单小区频点优先级系数,用公式表示如下:
icelln-cell1=celln对cell1的小区干扰 (公式3)
公式3是公式1的简化,即设置公式1中的a1=0,a2=1。
每个基本频率资源内cell1的频点优先级系数IRseg为,每个相邻小区的单小区频点优先级系数之和,用公式表示如下:
IRseg=∑icelln-cell1 (公式4)
公式4是公式2的简化,即设置公式1中的βn=1
步骤二,集中节点将新接入的小区的各允许工作带宽按从大到小排序,表示为Band0~Bandk;
步骤三,从最大允许工作带宽Band0为当前的允许工作带宽开始,集中节点从新接入的小区的符合当前的允许工作带宽的允许工作频段的中心频点的起点开始,逐一查找所有
可能的中心频点,查找可用频段,一旦查找到可用频段,停止查找,将该可用频段确定为分配为cell1的频段。
其中,可用频段满足:某中心频点上,当前的允许工作带宽占用的所有基本频率资源的频点优先级系数IRseg都满足IRseg≤ThRseg,其中,ThRseg为预设的第一可用频点优先级系数门限值。ThRseg设置为能够指示的干扰的最小值。
步骤四,如果当前的允许工作带宽Band0没有可用频段,按照排序获取下一个允许工作带宽Band1替换当前的允许工作带宽,并重复步骤三的查找过程,查找可用频段,直到查找到可用频段时停止查找,或者,直至将最小允许工作带宽Bandk作为当前的允许工作带宽,按照步骤三的查找过程查找结束且确定没有可用频段时停止查找。
步骤五,若查找到可用频段,集中节点将可用频段,包括中心频点和带宽资源,配置给新接入的小区cell1。
该具体实施例中还提供了一种为不同小区分配完全正交的频率资源的简化方法,具体实现过程如下:
步骤一,集中节点计算每个基本频率资源内cell1的频点优先级系数IRseg,具体为:若基本频率资源未被相邻小区使用,则该基本频率资源的频率优先级系数为零;若基本频率资源被相邻小区使用,则该基本频率资源的所述频点优先级系数为1;
步骤二,集中节点将新接入的小区的各允许工作带宽按从大到小排序,即为Band0~Bandk;
步骤三,从最大允许工作带宽Band0作为当前的允许工作带宽开始,集中节点从小区满足当前的允许工作带宽的允许工作频段的中心频点的起点开始,逐一查找所有可能的中心频点,查找可用频段。一旦查找到可用频段,停止查找,将该可用频段确定为分配为cell1的频段。
该可用频段满足:某中心频点上,当前的允许工作带宽占用的所有基本频率资源的频点优先级系数都满足IRseg=0。
步骤四,如果当前的允许工作带宽Band0没有可用频段,按照排序获取下一个允许工作带宽Band1替换当前的允许工作带宽Band1,并重复步骤三的查找过程,查找可用频段,直到查找到可用频段时停止查找,或者,直至将最小允许工作带宽Bandk作为当前的允许工作带宽,按照步骤三的查找过程查找结束且确定没有可用频段时停止查找。
步骤五,集中节点将可用频段,包括中心频点和带宽资源,配置给新接入小区cell1。
该具体实施例中,如果集中节点同时要为多个小区配置频率资源,可以针对每个新接入的小区,查找该新接入的小区的所有可用频段;根据各新接入的小区的所有的可用频段,统一为各新接入的小区分配频率资源。
其中,针对每个新接入小区查找所有可用频段的过程为:
针对每个允许工作带宽,从小区满足该允许工作带宽的允许工作频段的中心频点的起点开始,遍历所有可能的中心频点,查找可用频段并保存,直至遍历各允许工作带宽。该过程中,可以按照各允许工作带宽从大到小的顺序,逐一查找各允许工作带宽对应的可用频点;也可以是按照任意顺序查找各允许工作带宽对应的可用频点。
例如,新接入的小区AP1的可用频段有两个:Band1和Band2,新接入的小区AP2的可用频段有Band2,以分配频率资源的新接入的小区的数目最大化为原则,集中节点将Band1分配给AP1、将Band2分配给AP2。
第五具体实施例中,集中节点为不同小区分配中心频段不重合的频率资源,其目的是为了保障小区中心频点附近频段的信号互不干扰(例如,LTE***的中心频点附近的1.4MHz带宽),即广播消息和公共信令互不干扰,分配效果如附图11所示。具体过程如下:
步骤一,集中节点根据上述公式1和公式2计算各基本频率资源的频点优先级系数;
步骤二,集中节点将新接入的小区的各允许工作带宽按从大到小排序,即为Band0~Bandk;
步骤三,从最大允许工作带宽Band0作为当前的允许工作带宽开始,集中节点从小区满足当前的允许工作带宽的允许工作频段的中心频点的起点开始,逐一查找所有可能的中心频点,查找绝对可用频段。
该绝对可用频段满足:允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一绝对可用频点优先级系数门限值ThRseg0,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二绝对可用频点优先级系数门限值Th0。
一旦查找到绝对可用频段,停止查找,将该绝对可用频段确定为分配为cell1的频段。
步骤四,如果当前的允许工作带宽Band0没有绝对可用频段,按照排序获取下一个允许工作带宽Band1替换当前的允许工作带宽Band0,并重复步骤三的查找过程,查找绝对可用频段,直到查找到绝对可用频段时停止查找,或者,直至将最小允许工作带宽Bandk作为当前的允许工作带宽,按照步骤三的查找过程查找结束且确定没有绝对可用频段时停止查找。
步骤五,若未查找到绝对可用频段,针对每个允许工作带宽,遍历小区的符合该可选工作带宽的各允许工作频段,查找各可用频段并保存,直至遍历各允许工作带宽。其中,保存可用频段,包括该可用频段的中心频点、带宽、各IRseg和各IBand。
可用频段满足:允许工作频段内的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
其中,IBand表示为带宽内所有基本频率资源的频点优先级系数的综合加权值,具体地,
IBand=mean(γ*IRseg)+Pfcenter,其中,mean(γ*IRseg)表示允许工作频段中包含的各基本频率资源的频段优先级系数IRseg的加权平均,γ表示权值,Pfcenter为用于表示反映允许工作频段的中心频点的重合情况的因子;
在允许工作频段的中心频点被相邻小区使用时,Pfcenter为无穷大值;
在允许工作频段的中心频点未被相邻小区使用时,Pfcenter为零值。
具体地,如果只考虑允许工作频段的频点优先级系数IBand,可将ThRseg可以设为无穷大。
具体地,设置Th0=ThBand以及ThRseg0=ThRseg,不区分绝对可用频段和可用频段,只需要执行绝对可用频段的查找过程,一旦查找到绝对可用频段则停止查找,并将该绝对可用频段分配给新接入的小区,并在遍历所有的允许工作带宽后且未查找到绝对可用频段时,不再进行可用频段的查找。
步骤六:根据保存的各可用频段的带宽和该可用频段的频点优先级系数IBand,以在相同的带宽条件下选择IBand最小的可用频段,在IBand想接近的情况下选择具有较大带宽的可用频段为原则,选择可用频段。
一个具体实现中,针对每个允许工作带宽,确定符合该允许工作带宽的各可用频段的频点优先级系数IBand中的最小值,选择该最小值所对应的可用频段;
分别计算选择的每个可用频段的系数,该系数为可用频段的带宽与可用频段的频点优先级系数IBand的乘积,以及与可用频段的带宽对应的偏移值offsetBand的乘积;
选择各系数中的最大值所对应的可用频段。
步骤七,将选择可用频段,包括频点和带宽资源,分配给新接入的小区。
该具体实施例中,如果集中节点同时要为多个小区配置频率资源,可以针对每个新接入的小区,查找该新接入的小区的所有可用频段;根据各新接入的小区的所有的可用频段,统一为各新接入的小区分配频率资源。
统一为各新接入的小区分配频率资源时,以为新接入的小区分配较大的带宽为原则,或者,以能够分配频率资源的新接入的小区的数目最大化为原则。
例如,频段band1和band2相邻,对小区AP1,IBand1=0.3,IBand2=0.6,则I(Band1+Band2)=0.45,band1、band2或(band1+band2)都可以分配给小区AP作为工作频段;对小区AP2,只有band2满足可用频段的要求。根据频点带宽配置策略,如果按尽量为AP分配最大带宽为准则,集中节点将(band1+band2)分配给AP1,AP2则根据AP1接入后的情况重新计算频点优先级系数,有可能不能得到频率资源进行工作;如果以新接入的小区的数目最大化为原则,集中节点将band1分配给AP1,将band2分配给AP2。
具体实施例六,集中节点为不同小区分配干扰最小和/或负荷最小的频率资源,该具体
实施例中不考虑中心频段的影响,按照带宽内干扰最小的原则为新接入的小区分配频率资源。
例如,如果基本频率资源的宽度为2.5MHz,要为新接入的小区分配5MHz的带宽资源,基本频率资源Rseg1、Rseg2、Rseg3的频点优先级系数分别为IRseg1=0.2、IRseg2=0.2、IRseg3=0.3,相邻小区已使用频段资源(Rseg1+Rseg2)和频段资源(Rseg2+Rseg3),根据干扰最小和/或负荷最小原则,不考虑中心频段是否重合,为新接入的小区分配频段资源(Rseg1+Rseg2)。
该具体实施例中,假设新接入的小区为cell1。
步骤一,集中节点根据公式1计算基本频率资源内的相邻小区celln对新接入的小区cell1的单小区频点优先级系数,根据公式2计算基本频率资源内的频点优先级系数。
步骤二,集中节点将新接入的小区的各允许工作带宽按从大到小排序,表示为Band0~Bandk;
步骤三,从最大允许工作带宽Band0作为当前的允许工作带宽开始,集中节点从小区满足当前的允许工作带宽的允许工作频段的中心频点的起点开始,逐一查找所有可能的中心频点,查找绝对可用频段。
该绝对可用频段满足:允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一绝对可用频点优先级系数门限值ThRseg0,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二绝对可用频点优先级系数门限值Th0。
一旦查找到绝对可用频段,停止查找,将该绝对可用频段确定为分配为cell1的频段。
步骤四,如果当前的允许工作带宽Band0没有绝对可用频段,按照排序获取下一个允许工作带宽Band1替换当前的允许工作带宽Band0,并重复步骤三的查找过程,查找绝对可用频段,直到查找到绝对可用频段时停止查找,或者,直至将最小允许工作带宽Bandk作为当前的允许工作带宽,按照步骤三的查找过程查找结束且确定没有绝对可用频段时停止查找。
步骤五,若未查找到绝对可用频段,针对每个允许工作带宽,遍历小区的符合该可选工作带宽的各允许工作频段,查找各可用频段并保存,直至遍历各允许工作带宽。其中,保存可用频段,包括该可用频段的中心频点、带宽、各IRseg和各IBand。
可用频段满足:允许工作频段内的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
具体地,如果只考虑允许工作频段的频点优先级系数IBand,可将ThRseg可以设为无穷大。
其中,IBand表示为带宽内所有基本频率资源的频点优先级系数的综合加权值,一种简
单的方法中IBand取带宽内所有基本频率资源的频点优先级系数的加权平均,用公式表示为IBand=mean(γ*IRseg)
具体地,设置Th0=ThBand以及ThRseg0=ThRseg,不区分绝对可用频段和可用频段,只需要执行绝对可用频段的查找过程,一旦查找到绝对可用频段则停止查找,并将该绝对可用频段分配给新接入的小区,并在遍历所有的允许工作带宽后且未查找到绝对可用频段时,不再进行可用频段的查找。
步骤六:根据保存的各可用频段的带宽和该可用频段的频点优先级系数IBand,以在相同的带宽条件下选择IBand最小的可用频段,在IBand想接近的情况下选择具有较大带宽的可用频段为原则,选择可用频段。
一个具体实现中,针对每个允许工作带宽,确定符合该允许工作带宽的各可用频段的频点优先级系数IBand中的最小值,选择该最小值所对应的可用频段;
分别计算选择的每个可用频段的系数,该系数为可用频段的带宽与可用频段的频点优先级系数IBand的乘积,以及与可用频段的带宽对应的偏移值offsetBand的乘积;
选择各系数中的最大值所对应的可用频段。
步骤七,将选择可用频段,包括频点和带宽资源,分配给新接入的小区。
具体实施例七,以上具体实施例中,通过设置门限值确定可用频段,本申请实施例中,采用不设置门限值的方式确定可用频段,基本思路为将基站允许工作频段内的各频点优先级系数排序,选择分配给新接入的小区的可用频段。
根据集中节点为小区分配的频率资源的特点可以有以下两种处理方式:
第一种处理方式中,集中节点为不同小区分配中心频段不重合的可用频率资源;
第二种处理方式中,集中节点不考虑中心频段影响,为不同小区分配干扰最小和/或负荷最小的频率资源。
该具体实施例中,假设新接入的小区为cell1。
第一种处理方式的具体过程如下:
步骤一,集中节点根据公式1计算资源基本单位内的单小区频点优先级系数,根据公式2计算资源基本单位内的频点优先级系数。
步骤二,对于每个允许工作带宽,集中节点从小区的符合该允许工作带宽的允许工作频段的中心频点起点开始,遍历所有可能的中心频点,计算允许工作频段的频点优先级系数IBand,IBand为带宽内所有资源基本单位频点优先级系数的综合加权值。
一种最简单的方法是取带宽内所有资源基本单位频点优先级系数的加权平均,如IBand=mean(γ*IRseg)+Pfcenter,因子Pfcenter反映中心频点重合情况,如果当前查找的中心频点已被邻小区使用,Pfcenter取大值,如无穷大,否则Pfcenter=0。
可选地,遍历各允许工作带宽计算各允许工作带宽对于的各IBand之前,将新接入的小
区的各允许工作带宽从大到小排序,表示为Band0~Bandk,从最大允许工作带宽Band0开始,依次遍历各允许工作带宽计算各IBand。
步骤二中的IBand的计算方式也可简化为:若当前中心频点未被相邻小区使用,则IBand=mean(γ*IRseg);若当前中心频点被相邻小区使用,则IBand取NaN或无穷大或其他明显需要排除的值。
集中节点存储从Band0~BandK的所有允许工作频段的信息,包括:中心频点、带宽、各IRseg、各IBand。
步骤三,集中节点对允许工作带宽的IBand排序,统一考虑带宽和频点优先级信息,在带宽相同的情况下,优先选择IBand最小的频段,在各IBand之间的差值在设定范围内的情况下(即IBand比较接近),优先选择带宽最大的频段作为可用频段。
一种具体的计算方法为:
针对每个允许工作带宽,确定符合所述允许工作带宽的各允许工作频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述允许工作频段;
分别计算选择的每个所述允许工作频段的系数,所述系数为所述允许工作频段的允许工作带宽与所述允许工作频段的频段优先级系数IBand的乘积,以及与所述允许工作频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的允许工作频段,将确定的所述允许工作频段作为可用频段。
步骤四:集中节点将可用频段,包括中心频点和带宽资源,配置给新接入的小区cell1。
第二种处理方式的具体过程与第一种处理方式的具体处理过程相同,区别仅在于,步骤三中计算各允许工作频段的频点优先级系数IBand时,不考虑中心频点的重合情况,在一个简单方法中,IBand取带宽内所有基本频率资源的频点优先级系数的加权平均,不考虑反映中心频点重合情况的因子Pfcenter,用公式表示为IBand=mean(γ*IRseg)。
基于相同的原理,本申请实施例还提供了一种网络设备,该网络设备的具体实施可参见上述方法部分集中节点的具体实施,重复之处不再赘述,实际部署时该网络设备可以是网关(GW)或核心网节点或操作、管理和维护(Operation Administration Maintenance,OAM)等高层网络节点,也可以是超级基站。如附图12所示,该网络设备主要包括:
第一确定模块1201,用于确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源;
第二确定模块1202,用于确定每个所述基本频率资源的频点优先级系数,所述频点优先级系数表征与所述小区位置相邻的各相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,所述各相邻小区在所述基本频率资源内的负荷;
分配模块1203,用于根据所述基本频率资源的所述频点优先级系数,为所述小区分配
频率资源。
优选地,第二确定模块具体用于:
确定每个所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷;
根据所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷,计算每个所述相邻小区对所述小区的单小区频点优先级系数,以及根据每个所述相邻小区对所述小区的单小区频点优先级系数,计算所述基本频率资源的所述频点优先级系数。
具体地,有以下两种实施方式:
第一种具体实施方式中,第二确定模块具体用于:
针对每个所述相邻小区,计算第一权重因子与所述相邻小区在所述基本频率资源内的负荷的乘积,与第二权重因子与所述相邻小区在所述基本频率资源内对所述小区的干扰的乘积的和,获得每个所述相邻小区对所述小区的单小区频点优先级系数;
计算每个所述相邻小区的所述单小区频点优先级系数的加权和,获得所述基本频率资源的所述频点优先级系数IRseg。
第二种具体实施方式中,所述第二确定模块具体用于:
将所述相邻小区在所述基本频率资源内对所述小区的干扰,作为所述相邻小区对所述小区的单小区频点优先级系数;
计算每个所述相邻小区的所述单小区频点优先级系数之和,获得所述基本频率资源的所述频点优先级系数IRseg。
优选地,该第二具体实施例中,第二确定模块具体用于:
若所述基本频率资源未被所述相邻小区使用,则确定所述基本频率资源的所述频率优先级系数为零;
若所述基本频率资源被所述相邻小区使用,则确定所述基本频率资源的所述频点优先级系数为1。
优选地,第二确定模块具体用于:
根据基站的位置信息,确定所述相邻小区的位置,根据所述位置以及所述相邻小区的频率资源,确定所述相邻小区对所述小区的干扰;
或者,
接收基站上报的所述相邻小区对所述小区的干扰,所述干扰由所述基站对所述相邻小区进行干扰测量后确定;
或者,
将所述小区开启的历史记录中保存的、终端或基站测量的所述相邻小区的干扰,确定
为所述相邻小区对所述小区的干扰。
进一步地,第二确定模块还用于:
根据所述基本频率资源的所述频点优先级系数IRseg,计算所述小区满足可选工作带宽的各允许工作频段的频点优先级系数IBand。
优选地,分配模块具体用于:
根据所述基本频率资源的所述频点优先级系数,为所述小区分配与所述各相邻小区的的频率资源正交的频率资源;
或者,分配模块具体用于:
根据所述基本频率资源的所述频点优先级系数,为所述小区分配与所述各相邻小区的频率资源的中心频段不重合的频率资源;
或者,
根据所述基本频率资源的所述频点优先级系数,为所述小区分配干扰最小和/或负荷最小的频率资源。
本申请实施例中,分配模块为小区分配频率资源可以有以下几种具体实现方式:
第一种具体实现方式中,分配模块具体用于:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到绝对可用频段时,将所述绝对可用频段分配给所述小区;
所述绝对可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一绝对可用频点优先级系数门限值ThRseg0,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二绝对可用频点优先级系数门限值Th0。
一个优选的实现方式中,分配模块还用于:
若未查找到所述绝对可用频段时,遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
另一个优选的实现方式中,分配模块还用于:
若未查找到所述绝对可用频段时,逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
第二种具体实现方式中,分配模块还用于:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
或者是,分配模块还用于:
遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;
所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
在一个优选的实施方式中,分配模块还用于根据保存的可用频段的频点优先级系数IBand选择可用频段,具体为:
所述分配模块具体用于:
将保存的各所述可用频段的频点优先级系数IBand按照大小排序;
选择所述可用频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述可用频段分配给所述小区;或者,
确定与所述可用频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述可用频段,选择确定的各所述可用频段中工作带宽最大的可用频段,将选择的所述可用频段分配给所述小区。
优选地,分配模块具体用于:
针对每个允许工作带宽,确定符合所述允许工作带宽的各可用频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述可用频段;
分别计算选择的每个所述可用频段的系数,所述系数为所述可用频段的允许工作带宽与所述可用频段的频点优先级系数IBand的乘积,以及与所述可用频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的所述可用频段,将确定的所述可用频段分配给所述小区。
第三种具体实现方式中,分配模块具体用于:
将所述小区的符合各可选工作带宽的各允许工作频段的频点优先级系数IBand按照大小排序;
选择所述各允许工作频段的频点优先级系数IBand中的最小值,将所述最小值所对应的
所述允许工作频段分配给所述小区;或者,
确定与所述各允许工作频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述允许工作频段,选择确定的各所述允许工作频段中工作带宽最大的允许工作频段,将选择的所述允许工作频段分配给所述小区。
优选地,分配模块具体用于:
针对每个允许工作带宽,确定符合所述允许工作带宽的各允许工作频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述允许工作频段;
分别计算选择的每个所述允许工作频段的系数,所述系数为所述允许工作频段的允许工作带宽与所述允许工作频段的频段优先级系数IBand的乘积,以及与所述允许工作频段的允许工作带宽对应的偏移值offsetBand的乘积;
确定所述系数中的最大值所对应的允许工作频段,将确定的所述允许工作频段分配给所述小区。
第四种具体实现方式中,相应于步骤302中计算基本频率资源的频点优先级系数的第二种具体实施方式,分配模块具体用于:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg小于等于第一可用频点优先级系数门限值ThRseg时,停止查找,将确定的所述允许工作频段分配给所述小区,所述第一频点优先级系数门限值ThRseg为能够指示的干扰的最小值。
第五种具体实现方式中,相应于步骤302中计算基本频率资源的频点优先级系数的简化方式,分配模块具体用于:
逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg等于零时,停止查找,将确定的所述允许工作频段分配给所述小区。
以上第四~第五具体实施方式,为小区分配的频率资源与各相邻小区的频率资源正交,也就是与相邻小区的频率资源没有交叠。
优选地,以上第一~五种具体实现方式中,所述分配模块还用于:
若所述小区存在多个所述可选工作带宽,将所述小区的各个所述可选工作带宽按照从大到小的顺序排序后,按照排列顺序获取所述可选工作带宽。
优选地,第一确定模块具体用于:
根据所述小区的允许工作带宽与频率资源基本单位的对应关系,将所述小区的符合所述允许工作带宽的所述允许工作频段,按照所述频率资源基本单位划分为多个基本频率资源。
优选地,第一确定模块还用于:
接收基站与网络建立连接后发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
优选地,第一确定模块还用于:
通知基站开启所述小区,并接收所述基站发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
优选地,分配模块还用于:
拒绝为所述小区分配频率资源,并向开启所述小区的基站返回拒绝所述小区接入的消息。
基于相同的原理,本申请实施例还提供了一种网络设备,该网络设备的具体实施可参见上述方法部分集中节点的具体实施,重复之处不再赘述,实际部署时该网络设备可以是GW或核心网节点或操作、OAM等高层网络节点,也可以是超级基站。如附图13所示,该网络设备主要包括:
处理器1300,用于读取存储器1320的程序,执行下列过程:
确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源;
确定每个所述基本频率资源的频点优先级系数,所述频点优先级系数表征与所述小区位置相邻的各相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,所述各相邻小区在所述基本频率资源内的负荷;
根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源;
收发机1310,用于在处理器1300的控制下接收和发送数据;
存储器1320,用于保存处理器1300执行操作时所使用的数据。
其中,在图13中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1300代表的一个或多个处理器和存储器1320代表的存储器的各种电路链接在一起。总线架构还可以将诸如***设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1310可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。处理器1300负责管理总线架构和通常的处理,存储器1320可以存储处理器1300在执行操作时所使用的数据。
基于上述技术方案,本申请实施例中,通过确定小区允许工作频段内的每个基本频率资源,确定每个所述基本频率资源的频点优先级系数,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,通过将频率资源划分为基本频率资源,实现对频率资源的统一规划,根据每个基本频率资源的频点优先级系数,确定基站下小区可以使用的频率资源,从而实现了对基站频率资源的合理配置,有效降低或避免了小区间干扰。
基于以上技术方案,可以实现基站间频率资源合理配置,有效利用频谱资源,并能够达到频谱效率最大化。尤其是对于基站密集部署的场景,通过对基站频率资源的合理配置,可以降低甚至避免基站间干扰,提高无线传输性能,进而提高***容量。本申请实施例尤其适用于小区密集部署的场景,该场景下对基站频率资源进行配置,效率更高、实用性更强。
本领域内的技术人员应明白,本申请的实施例可提供为方法、***、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然,本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的精神和范围。这样,倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。
Claims (57)
- 一种基站频率资源配置方法,其特征在于,包括:确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源;确定每个所述基本频率资源的频点优先级系数,所述频点优先级系数表征为与所述小区位置相邻的各相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,所述各相邻小区在所述基本频率资源内的负荷;根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源。
- 如权利要求1所述的方法,其特征在于,确定每个所述基本频率资源的所述频点优先级系数,包括:确定每个所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷;根据所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷,计算每个所述相邻小区对所述小区的单小区频点优先级系数,以及根据每个所述相邻小区对所述小区的单小区频点优先级系数,计算所述基本频率资源的所述频点优先级系数,所述单小区频点优先级系数表征为单个相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,单个相邻小区在所述基本频率资源内的负荷。
- 如权利要求2所述的方法,其特征在于,计算每个所述相邻小区对所述小区的单小区频点优先级系数,以及根据每个所述相邻小区对所述小区的单小区频点优先级系数,计算所述基本频率资源的所述频点优先级系数,包括:针对每个所述相邻小区,计算第一权重因子与所述相邻小区在所述基本频率资源内的负荷的乘积,与第二权重因子与所述相邻小区在所述基本频率资源内对所述小区的干扰的乘积的和,获得每个所述相邻小区对所述小区的单小区频点优先级系数;计算每个所述相邻小区对所述小区的所述单小区频点优先级系数的加权和,获得所述基本频率资源的所述频点优先级系数IRseg。
- 如权利要求3所述的方法,其特征在于,所述第一权重因子与第二权重因子的和为1;所述相邻小区在所述基本频率资源内对所述小区的干扰为,所述相邻小区对所述小区的干扰测量值与干扰最大量化值的比值,所述相邻小区对所述小区的干扰测量值为在小区内测量得到的所述相邻小区的参考信号接收功率RSRP或者其他参考信号的测量强度值;所述相邻小区在所述基本频率资源内的的负荷的取值范围为0到1,其中“0”表示所述相邻小区的资源没有被占用资源,“1”表示所述相邻小区的全部资源都被占用。
- 如权利要求1所述的方法,其特征在于,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,包括:根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,且使得分配的所述频率资源与所述各相邻小区的频率资源正交。
- 如权利要求5所述的方法,其特征在于,确定每个所述基本频率资源的频点优先级系数,包括:将所述相邻小区在所述基本频率资源内对所述小区的干扰,作为所述相邻小区对所述小区的单小区频点优先级系数;计算每个所述相邻小区的所述单小区频点优先级系数之和,获得所述基本频率资源的所述频点优先级系数IRseg。
- 如权利要求6所述的方法,其特征在于,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,包括:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg小于等于第一可用频点优先级系数门限值ThRseg时,停止查找,将确定的所述允许工作频段分配给所述小区,所述第一频点优先级系数门限值ThRseg为能够指示的干扰的最小值。
- 如权利要求5所述的方法,其特征在于,确定每个所述基本频率资源的频点优先级系数,包括:若所述基本频率资源未被所述相邻小区使用,则确定所述基本频率资源的所述频率优先级系数为零;若所述基本频率资源被所述相邻小区使用,则确定所述基本频率资源的所述频点优先级系数为1。
- 如权利要求8所述的方法,其特征在于,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,包括:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg等于零时,停止查找,将确定的所述允许工作频段分配给所述小区。
- 如权利要求1所述的方法,其特征在于,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,包括:根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,且使得分配的所述频率资源与所述各相邻小区的频率资源的中心频段不重合;或者,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,且使得分 配的所述频率资源的干扰最小和/或负荷最小。
- 如权利要求10所述的方法,其特征在于,所述方法还包括:根据所述基本频率资源的所述频点优先级系数IRseg,计算所述小区的满足可选工作带宽的各允许工作频段的频点优先级系数IBand。
- 如权利要求11所述的方法,其特征在于,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,包括:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到绝对可用频段时,将所述绝对可用频段分配给所述小区;所述绝对可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一绝对可用频点优先级系数门限值ThRseg0,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二绝对可用频点优先级系数门限值Th0。
- 如权利要求12所述的方法,其特征在于,若未查找到所述绝对可用频段时,所述方法还包括:遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
- 如权利要求12所述的方法,其特征在于,若未查找到所述绝对可用频段时,所述方法还包括:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
- 如权利要求11所述的方法,其特征在于,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,包括:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
- 如权利要求11所述的方法,其特征在于,根据所述基本频率资源的所述频点优先 级系数,为所述小区分配频率资源,包括:遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
- 如权利要求7、9、12-16任一项所述的方法,其特征在于,逐一查找所述小区的符合所述可选工作带宽的各允许工作频段之前,或者,遍历所述小区的符合所述可选工作带宽的各允许工作频段之前,还包括:若所述小区存在多个所述可选工作带宽,将所述小区的各个所述可选工作带宽按照从大到小的顺序排序后,按照排列顺序获取所述可选工作带宽。
- 如权利要求11所述的方法,其特征在于,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,包括:将所述小区的符合各可选工作带宽的各允许工作频段的频点优先级系数IBand按照大小排序;选择所述各允许工作频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述允许工作频段分配给所述小区;或者,确定与所述各允许工作频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述允许工作频段,选择确定的各所述允许工作频段中工作带宽最大的允许工作频段,将选择的所述允许工作频段分配给所述小区。
- 如权利要求18所述的方法,其特征在于,根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,包括:针对每个允许工作带宽,确定符合所述允许工作带宽的各允许工作频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述允许工作频段;分别计算选择的每个所述允许工作频段的系数,所述系数为所述允许工作频段的允许工作带宽与所述允许工作频段的频段优先级系数IBand的乘积,以及与所述允许工作频段的允许工作带宽对应的偏移值offsetBand的乘积;确定所述系数中的最大值所对应的允许工作频段,将确定的所述允许工作频段分配给所述小区。
- 如权利要求11-16、18、19任一项所述的方法,其特征在于,若为所述小区分配与所述各相邻小区的频率资源的中心频段不重合的频率资源,所述允许工作频段的频点优先级系数IBand为:所述允许工作频段的频点优先级系数IBand=mean(γ*IRseg)+Pfcenter,其中,mean(γ*IRseg) 表示所述允许工作频段中包含的各基本频率资源的频段优先级系数IRseg的加权平均,γ表示权值,Pfcenter为用于表示反映所述允许工作频段的中心频点的重合情况的因子。
- 如权利要求20所述的方法,其特征在于:在所述允许工作频段的中心频点被所述相邻小区使用时,Pfcenter为无穷大值;在所述允许工作频段的中心频点未被所述相邻小区使用时,Pfcenter为零值。
- 如权利要求11-16、18、19任一项所述的方法,其特征在于,若为所述小区分配干扰最小和/或负荷最小的频率资源,所述允许工作频段的频点优先级系数IBand为:所述允许工作频段的频点优先级系数IBand=mean(γ*IRseg),其中,mean(γ*IRseg)表示所述允许工作频段中包含的各基本频率资源的频段优先级系数IRseg的加权平均,γ表示权值。
- 如权利要求13或16所述的方法,其特征在于,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区,包括:将所述可用频段的频点优先级系数IBand按照大小排序;选择所述可用频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述可用频段分配给所述小区;或者,确定与所述可用频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述可用频段,选择确定的各所述可用频段中工作带宽最大的可用频段,将选择的所述可用频段分配给所述小区。
- 如权利要求23所述的方法,其特征在于,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区,包括:针对每个允许工作带宽,确定符合所述允许工作带宽的各可用频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述可用频段;分别计算选择的每个所述可用频段的系数,所述系数为所述可用频段的允许工作带宽与所述可用频段的频点优先级系数IBand的乘积,以及与所述可用频段的允许工作带宽对应的偏移值offsetBand的乘积;确定所述系数中的最大值所对应的所述可用频段,将确定的所述可用频段分配给所述小区。
- 如权利要求2所述的方法,其特征在于,确定每个所述相邻小区在所述基本频率资源内对所述小区造成的干扰,包括:所述集中节点根据基站的位置信息,确定所述相邻小区的位置,根据所述位置以及所述相邻小区的频率资源,确定所述相邻小区对所述小区的干扰;或者,所述集中节点接收基站上报的所述相邻小区对所述小区的干扰,所述干扰由所述基站 对所述相邻小区进行干扰测量后确定;或者,所述集中节点将所述小区开启的历史记录中保存的、终端或基站测量的所述相邻小区的干扰,确定为所述相邻小区对所述小区的干扰。
- 如权利要求1所述的方法,其特征在于,确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源,包括:根据所述小区的允许工作带宽与频率资源基本单位的对应关系,将所述小区的符合所述允许工作带宽的所述允许工作频段,按照所述频率资源基本单位划分为多个基本频率资源。
- 如权利要求26所述的方法,其特征在于,所述方法还包括:所述集中节点接收基站与网络建立连接后发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
- 如权利要求27所述的方法,其特征在于,接收基站与网络建立连接后发送的频点和带宽能力信息之前,还包括:所述基站接收触发节点发送的请求开启所述小区的请求消息。
- 如权利要求26所述的方法,其特征在于,所述方法还包括:所述集中节点通知基站开启所述小区,并接收所述基站发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
- 如权利要求1所述的方法,其特征在于,所述方法还包括:所述集中节点拒绝为所述小区分配频率资源,并向开启所述小区的基站返回拒绝所述小区接入的消息。
- 如权利要求30所述的方法,其特征在于,所述方法还包括:所述基站在设定时长后向所述集中节点重新发送为所述小区分配频率资源的请求。
- 如权利要求5或10所述的方法,其特征在于,所述方法还包括:若同时为多个所述小区分配频率资源,以为所述小区分配具有较大带宽的频率资源为原则;或者,以分配频率资源的所述小区的个数最多为原则。
- 一种网络设备,其特征在于,包括:第一确定模块,用于确定小区的符合可选工作带宽的各允许工作频段内的每个基本频率资源;第二确定模块,用于确定每个所述基本频率资源的频点优先级系数,所述频点优先级 系数表征与所述小区位置相邻的各相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,所述各相邻小区在所述基本频率资源内的负荷;分配模块,用于根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源。
- 如权利要求33所述的网络设备,其特征在于,所述第二确定模块具体用于:确定每个所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷;根据所述相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或所述相邻小区在所述基本频率资源内的负荷,计算每个所述相邻小区对所述小区的单小区频点优先级系数,以及根据每个所述相邻小区对所述小区的单小区频点优先级系数,计算所述基本频率资源的所述频点优先级系数,所述单小区频点优先级系数表征为单个相邻小区在所述基本频率资源内对所述小区造成的干扰,和/或,单个相邻小区在所述基本频率资源内的负荷。
- 如权利要求34所述的网络设备,其特征在于,所述第二确定模块具体用于:针对每个所述相邻小区,计算第一权重因子与所述相邻小区在所述基本频率资源内的负荷的乘积,与第二权重因子与所述相邻小区在所述基本频率资源内对所述小区的干扰的乘积的和,获得每个所述相邻小区对所述小区的单小区频点优先级系数;计算每个所述相邻小区的所述单小区频点优先级系数的加权和,获得所述基本频率资源的所述频点优先级系数IRseg。
- 如权利要求33所述的网络设备,其特征在于,所述分配模块具体用于:根据所述基本频率资源的所述频点优先级系数,为所述小区分配频率资源,且使得分配的所述频率资源与所述各相邻小区的频率资源正交。
- 如权利要求36所述的网络设备,其特征在于,所述第二确定模块具体用于:将所述相邻小区在所述基本频率资源内对所述小区的干扰,作为所述相邻小区对所述小区的单小区频点优先级系数;计算每个所述相邻小区的所述单小区频点优先级系数之和,获得所述基本频率资源的所述频点优先级系数IRseg。
- 如权利要求37所述的网络设备,其特征在于,所述分配模块具体用于:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg小于等于第一可用频点优先级系数门限值ThRseg时,停止查找,将确定的所述允许工作频段分配给所述小区,所述第一频点优先级系数门限值ThRseg为能够指示的干扰的最小值。
- 如权利要求36所述的网络设备,其特征在于,所述第二确定模块具体用于:若所述基本频率资源未被所述相邻小区使用,则确定所述基本频率资源的所述频率优 先级系数为零;若所述基本频率资源被所述相邻小区使用,则确定所述基本频率资源的所述频点优先级系数为1。
- 如权利要求39所述的网络设备,其特征在于,所述分配模块具体用于:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定存在允许工作频段的每个所述基本频率资源的所述频点优先级系数IRseg等于零时,停止查找,将确定的所述允许工作频段分配给所述小区。
- 如权利要求33所述的网络设备,其特征在于,所述分配模块具体用于:根据所述基本频率资源的所述频点优先级系数,为所述小区分配与所述各相邻小区的频率资源的中心频段不重合的频率资源;或者,根据所述基本频率资源的所述频点优先级系数,为所述小区分配干扰最小和/或负荷最小的频率资源。
- 如权利要求41所述的网络设备,其特征在于,所述第二确定模块还用于:根据所述基本频率资源的所述频点优先级系数IRseg,计算所述小区满足可选工作带宽的各允许工作频段的频点优先级系数IBand。
- 如权利要求42所述的网络设备,其特征在于,所述分配模块具体用于:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到绝对可用频段时,将所述绝对可用频段分配给所述小区;所述绝对可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一绝对可用频点优先级系数门限值ThRseg0,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二绝对可用频点优先级系数门限值Th0。
- 如权利要求43所述的网络设备,其特征在于,所述分配模块还用于:若未查找到所述绝对可用频段时,遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
- 如权利要求43所述的网络设备,其特征在于,所述分配模块还用于:若未查找到所述绝对可用频段时,逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小 于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
- 如权利要求42所述的网络设备,其特征在于,所述分配模块还用于:逐一查找所述小区的符合可选工作带宽的各允许工作频段,确定查找到可用频段时,将所述可用频段分配给所述小区;所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
- 如权利要求42所述的网络设备,其特征在于,所述分配模块还用于:遍历所述小区的符合所述可选工作带宽的各允许工作频段,查找各可用频段并保存,根据保存的所述可用频段的中心频点和带宽选择可用频段分配给所述小区;所述可用频段满足:所述允许工作频段的各基本频率资源的频点优先级系数IRseg小于等于预设的第一可用频点优先级系数门限值ThRseg,和/或,所述允许工作频段的频点优先级系数IBand小于等于预设的第二可用频点优先级系数门限值ThBand。
- 如权利要求38、40、43-47任一项所述的网络设备,其特征在于,所述分配模块还用于:若所述小区存在多个所述可选工作带宽,将所述小区的各个所述可选工作带宽按照从大到小的顺序排序后,按照排列顺序获取所述可选工作带宽。
- 如权利要求42所述的网络设备,其特征在于,所述分配模块具体用于:将所述小区的符合各可选工作带宽的各允许工作频段的频点优先级系数IBand按照大小排序;选择所述各允许工作频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述允许工作频段分配给所述小区;或者,确定与所述各允许工作频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述允许工作频段,选择确定的各所述允许工作频段中工作带宽最大的允许工作频段,将选择的所述允许工作频段分配给所述小区。
- 如权利要求49所述的网络设备,其特征在于,所述分配模块具体用于:针对每个允许工作带宽,确定符合所述允许工作带宽的各允许工作频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述允许工作频段;分别计算选择的每个所述允许工作频段的系数,所述系数为所述允许工作频段的允许工作带宽与所述允许工作频段的频段优先级系数IBand的乘积,以及与所述允许工作频段的允许工作带宽对应的偏移值offsetBand的乘积;确定所述系数中的最大值所对应的允许工作频段,将确定的所述允许工作频段分配给 所述小区。
- 如权利要求44或47所述的网络设备,其特征在于,所述分配模块具体用于:将保存的各所述可用频段的频点优先级系数IBand按照大小排序;选择所述可用频段的频点优先级系数IBand中的最小值,将所述最小值所对应的所述可用频段分配给所述小区;或者,确定与所述可用频段的频点优先级系数IBand中的最小值的差值在设定范围内的各所述可用频段,选择确定的各所述可用频段中工作带宽最大的可用频段,将选择的所述可用频段分配给所述小区。
- 如权利要求51所述的网络设备,其特征在于,所述分配模块具体用于:针对每个允许工作带宽,确定符合所述允许工作带宽的各可用频段的频点优先级系数IBand中的最小值,选择所述最小值所对应的所述可用频段;分别计算选择的每个所述可用频段的系数,所述系数为所述可用频段的允许工作带宽与所述可用频段的频点优先级系数IBand的乘积,以及与所述可用频段的允许工作带宽对应的偏移值offsetBand的乘积;确定所述系数中的最大值所对应的所述可用频段,将确定的所述可用频段分配给所述小区。
- 如权利要求34所述的网络设备,其特征在于,所述第二确定模块具体用于:根据基站的位置信息,确定所述相邻小区的位置,根据所述位置以及所述相邻小区的频率资源,确定所述相邻小区对所述小区的干扰;或者,接收基站上报的所述相邻小区对所述小区的干扰,所述干扰由所述基站对所述相邻小区进行干扰测量后确定;或者,将所述小区开启的历史记录中保存的、终端或基站测量的所述相邻小区的干扰,确定为所述相邻小区对所述小区的干扰。
- 如权利要求33所述的网络设备,其特征在于,所述第一确定模块具体用于:根据所述小区的允许工作带宽与频率资源基本单位的对应关系,将所述小区的符合所述允许工作带宽的所述允许工作频段,按照所述频率资源基本单位划分为多个基本频率资源。
- 如权利要求54所述的网络设备,其特征在于,所述第一确定模块还用于:接收基站与网络建立连接后发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
- 如权利要求54所述的网络设备,其特征在于,所述第一确定模块还用于:通知基站开启所述小区,并接收所述基站发送的频点和带宽能力信息,根据所述频点和所述带宽能力信息,确定所述基站开启的所述小区的各允许工作带宽以及各允许工作频段。
- 如权利要求33所述的网络设备,其特征在于,所述分配模块还用于:拒绝为所述小区分配频率资源,并向开启所述小区的基站返回拒绝所述小区接入的消息。
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